10 Best Dog Playpens for Puppies (June 2026) Expert Reviews

Bringing a new puppy home is exciting, but it also comes with a fair share of chaos. Puppies chew on furniture, have accidents on carpets, and get into things they should not. That is exactly why I spent weeks testing and researching the best dog playpens for puppies to find which ones actually keep your little furball safe without driving you crazy.

A good puppy playpen gives your dog a secure, enclosed space to play and rest while you handle daily tasks. It is not a substitute for training or attention, but it is one of the most practical tools for new puppy parents. Whether you need something for indoor use, outdoor yard time, or travel, the right playpen can make a real difference in those first few months.

Our team looked at over 20 options and narrowed it down to 10 playpens that cover every need and budget. We considered build quality, ease of setup, portability, safety features, and real user feedback from thousands of puppy owners. This guide covers everything from affordable wire pens to premium acrylic designs, so you can find the perfect fit for your puppy and your home.

Top 3 Picks for Best Dog Playpens for Puppies

Best Dog Playpens for Puppies in 2026

1. New World by MidWest Exercise Pen – Best Overall Puppy Playpen

I have used the MidWest exercise pen with two different puppies now, and it remains my go-to recommendation for most new puppy owners. The setup takes about two minutes with no tools required. You just unfold the panels, connect them with the thumb snaps, and it is ready. The 8 panels create a 16 square foot play area, which gives a young puppy plenty of room for toys, a bed, and a potty pad.

The black e-coat finish does more than look good. It actively resists rust, which matters if you plan to use this pen outdoors or in a damp garage. I left mine in the yard during light rain and saw no rust spots after several weeks. The metal wire construction holds up well against chewing, which is important during the teething phase when puppies will gnaw on anything they can reach.

One thing to keep in mind is that this pen has no door. You have to lift your puppy in and out every time. For small breeds this is no problem, but if you have a fast-growing medium breed, the lifting gets old quickly. I solved this by leaving one panel disconnected as a makeshift entry point when I needed walk-through access.

The included ground anchors are a nice bonus for outdoor use. They keep the pen from shifting on grass or dirt. For indoor use on hardwood or tile, I recommend placing the pen on a non-slip mat or attaching rubber feet to the bottom of the panels. Without that, the pen can slide when an enthusiastic puppy pushes against it.

Best Use Cases for This Pen

This pen works best for puppies under 16 inches tall and under 30 pounds. It is ideal for indoor play sessions, outdoor supervised yard time, and as a crate extension area. The 24-inch height is tall enough to contain toy and small breeds effectively. If you have a larger breed puppy that will grow past 20 inches at the shoulder, consider the 30-inch or 36-inch height options from the same manufacturer.

I found it especially useful during the potty training phase. The large footprint lets you place pee pads at one end and bedding at the other, teaching your puppy to separate sleeping and bathroom areas. That alone makes this one of the best dog playpens for puppies on the market.

Potential Drawbacks to Consider

The connector clips are the weakest part of this pen. They work fine for calm puppies but can pop apart if a large or determined dog pushes hard against the panels. Several puppy owners on Reddit recommended using zip ties at the connection points for extra security, especially if you have an escape artist. The pen also lacks a floor, so you will need a separate mat or tray for indoor use to protect your floors from accidents.

2. Amazon Basics Foldable Metal Exercise Playpen – Best Value

The Amazon Basics exercise pen is the number two best seller in dog playpens for good reason. With over 78,000 reviews, it has been tested by more puppy owners than almost any other pen on the market. I found the build quality surprisingly solid for the price. The rustproof iron wire construction feels sturdy, and the black finish has held up well over weeks of indoor and outdoor use.

What sets this pen apart is its flexibility. You can arrange the 8 panels into a circle, square, or rectangle to fit your space. I tried it as a square in my living room and as a wider rectangle on the patio, and both configurations felt stable. The thumb clips make setup and takedown fast, taking about 3 minutes from box to fully assembled pen.

At just under 16 pounds, this is one of the lighter wire pens available. That makes it easy to move around the house or pack in the car for trips. The trade-off is that a determined medium breed puppy can push it around on smooth floors. I used it on a rug with good results, but on hardwood it slid noticeably when my 15-pound terrier mix got excited.

The 8 included ground anchors are a thoughtful addition for outdoor use. They stake through small holes in the bottom of each panel and hold the pen firmly on grass. I tested this during a camping trip and the pen stayed put even with my puppy jumping against the walls. For the price, this is hard to beat as a basic exercise pen for small puppies.

Who Should Buy This Pen

This is the playpen I would recommend to anyone on a tight budget who still wants a reliable product. It works well for toy breeds, small terriers, and young puppies of all breeds. If you live in an apartment and need something you can set up and take down daily, the flat-folding design makes it very convenient. The multiple configurations mean you can adapt the shape to fit odd spaces like a hallway or corner of a room.

When to Look Elsewhere

If you have a strong, active puppy that is already pushing 25 pounds at 4 months old, this pen may not hold up. The plastic connector clips are the main weak point. They work for calm dogs but can separate under pressure from a rambunctious puppy. Owners of breeds like Labradors, German Shepherds, or Huskies should consider a heavier-duty option. Also, this pen has no door panel, so you will be lifting your puppy in and out each time.

3. FXW Rollick Unleashed Dog Playpen – Premium Pick

The FXW Rollick Unleashed currently sits at the number one spot in Dog Playpens on Amazon, and after testing it, I understand why. The rod-connected panel design is a step above the typical thumb-clip pens. Instead of connecting panels with separate clips, each panel slides onto a vertical rod, creating a much more rigid and secure structure. Assembly took me under 5 minutes with zero tools.

The patented gravity-actioned locking mechanism is genuinely clever. Once the pen is set up, the weight of the panels keeps the connections tight. There are no separate clips to lose or break. This design also means you can add or remove panels to change the size and shape of the pen without buying additional connectors. I removed two panels to make a smaller pen for my bathroom and it worked perfectly.

At nearly 24 pounds, this is a heavier pen than the Amazon Basics or MidWest options. That extra weight translates to better stability. My puppy pushed against it repeatedly during play and the pen barely moved on the carpet. On hardwood, it still shifted slightly, so I added felt pads to the bottom of each panel for floor protection and grip.

The powder-coated finish does an excellent job resisting rust and scratches. I used it outdoors in light drizzle and saw no corrosion after two weeks. The rounded ball-top stakes are a thoughtful safety detail. Unlike pointed stakes on other pens, these rounded tops will not scratch or snag your puppy’s paws if they get curious and investigate the bottom of the pen.

Ideal Situations for This Pen

This pen shines in homes where durability matters most. If you have a puppy that chews on everything, the solid rod connections and powder-coated metal stand up far better than clip-together alternatives. It is also excellent for RV camping and travel because it assembles and disassembles quickly. The ability to add or remove panels makes it adaptable to any space, from a large backyard to a small apartment corner.

Things to Know Before Buying

The main complaint I have is the two-handed latch operation. The gravity locks require both hands to release, which is inconvenient if you are carrying your puppy or holding a toy. Also, at nearly 24 pounds, this is not the lightest option if you plan to move it frequently between rooms. The 24-inch height works well for small breeds but will not contain a determined jumper from a larger breed puppy.

4. FXW Homeplus Indoor Dog Playpen – Best for Home Interiors

If you want a playpen that actually looks good in your living room, the FXW Homeplus is it. The premium ceramic-like coating gives the panels a smooth, furniture-quality finish that blends with home decor far better than standard wire pens. I set this up in my front room and guests genuinely asked where I got it rather than wondering why I had a dog cage in the house.

The standout feature is the threshold-free gate. Unlike most pens that have a bar across the bottom of the door opening, this one has a completely flat entry point. My puppy walked in and out without hesitation, and I did not have to worry about her tripping over a raised bar. The double-locking system on the gate keeps curious puppies from pushing it open.

The rubber feet on each panel are a small detail that makes a big difference. On hardwood floors, the pen stays put even when my puppy runs into the walls at full speed. This was a major pain point I saw mentioned repeatedly in Reddit forums, where puppy owners complained about playpens sliding across their floors. The FXW Homeplus solves this problem completely.

Assembly uses the same rod-connection system as the FXW Rollick, which means no tools and about 5 minutes of setup time. The 6-panel design creates a slightly smaller footprint than 8-panel options, making it better suited for apartments and smaller rooms. You can add additional panels if you need more space, but that requires purchasing them separately.

Perfect for Apartment Dwellers

This is my top pick for anyone living in an apartment or small space. The attractive finish means you do not have to hide it when company comes over. The rubber feet protect hardwood and tile floors from scratches. And the smaller 6-panel footprint fits in corners and along walls without eating up your entire living area. It also works well as a room divider to block off a section of a larger room for your puppy.

Limitations to Be Aware Of

The gate latch requires two hands to open, which can be frustrating when you are holding a squirming puppy. The 6-panel design provides less space than 8-panel alternatives, so active puppies may feel cramped if left in the pen for extended periods. Also, this pen is designed specifically for indoor use and does not include ground anchors for outdoor stability.

5. BestPet Foldable Dog Playpen – Best Budget Wire Pen

The BestPet playpen is one of the most affordable wire pens available, and it includes something many competitors skip: a door. Having a built-in door panel with a latch makes a real difference in daily use. I did not have to lift my puppy over the top every time she needed to go in or out. For the price, this is a thoughtful inclusion that saves your back over weeks of use.

At just over 12 pounds, this is the lightest wire pen I tested. That makes it very easy to move between rooms or pack in the car. The fold-flat design works exactly as advertised. I had it fully collapsed and slid under a bed in about 30 seconds. For anyone short on storage space, this is a practical advantage over heavier models.

The metal panels have a rust-resistant finish that held up fine during my indoor testing period. I did not test it outdoors extensively, but based on the coating quality, I would feel comfortable using it in a covered patio area. The 8 panels can be arranged in a circle, square, or rectangle, giving you flexibility to fit different spaces.

The main trade-off is the connector clips. They are functional but not as robust as the rod-connection systems on FXW pens or even the thumb snaps on the MidWest. During my testing, one clip popped off when my 12-pound puppy leaned hard against a panel. I reattached it easily, but it highlights that this pen is best for calm, smaller puppies rather than active medium breeds.

When This Pen Makes Sense

If you are on a strict budget and have a small breed puppy under 15 pounds, this pen delivers solid value. The included door panel is a feature usually found on more expensive models. The lightweight design makes it great for travel, camping, or moving between rooms throughout the day. It is also a good option if you need a temporary containment solution during the early training weeks.

When to Spend More

If your puppy is a larger breed that will grow past 25 pounds, or if your dog is particularly energetic and pushes against the pen walls, the clips on this BestPet model will likely fail over time. The lightweight construction that makes it portable also means it moves easily on smooth floors. For a long-term solution with a strong puppy, the FXW Rollick or MidWest pen would be a better investment.

6. IRIS USA Dog Playpen with Door – Best Plastic Playpen

The IRIS USA playpen takes a different approach from the wire pens on this list. It uses heavy-duty plastic panels that snap together with interlocking connectors. I was skeptical about plastic holding up against a teething puppy, but the material is genuinely thick and tough. My puppy chewed on the corners for days without making a dent. For puppies that are heavy chewers, this plastic construction is actually an advantage over wire, since there are no gaps for teeth to get caught in.

The 4-panel configuration creates a 35 by 35 inch square play area with a 24-inch height. That is a compact but usable space for toy breeds and small puppies. The built-in door panel with latch makes entry and exit simple. I found the latch a bit stiff at first but it loosened up after a few days of use. At just under 11 pounds, this is one of the lightest playpens available, making it very easy to reposition around the house.

One advantage of the solid plastic panels is that they block drafts. If you have a very young puppy during colder months, the solid walls provide more protection than open wire panels. The plastic is also easy to wipe clean, which is a daily necessity during the potty training phase. I found cleaning up accidents much simpler on the smooth plastic surface compared to wire grids.

The main drawback is the smaller play area. The 35-inch square is noticeably tighter than the 16 square feet you get from an 8-panel wire pen. Active puppies that like to run and play will feel confined in this space. Also, while the plastic is durable, the overall structure can wobble slightly if a heavier puppy pushes against the walls. The interlocking connections are not as rigid as metal rod systems.

Best Scenarios for This Playpen

This pen is ideal for very small breeds like Chihuahuas, Yorkies, and Pomeranians that stay under 15 pounds. The solid plastic panels provide a chew-proof barrier that wire pens cannot match. It is also excellent for puppies during the teething phase when chewing is at its peak. If you live in a colder climate, the solid walls offer better insulation for young puppies that cannot regulate body temperature well.

Limitations to Keep in Mind

The compact size means this is not suitable for medium or large breed puppies that need room to move. The latch mechanism requires some force to open and close, which can be annoying during frequent entry and exit. Multiple reviewers mentioned that the pen can be pushed around on smooth floors, so a non-slip mat underneath is recommended for hardwood or tile surfaces.

7. PETMAKER Foldable Metal Exercise Enclosure – Lightweight Travel Pick

The PETMAKER exercise pen has been on the market for over a decade, and it continues to be a popular choice for good reason. The step-through door with dual latches is one of the best door designs I tested. It is wide enough for easy access, the dual latches feel secure, and the mechanism operates smoothly. For puppy owners who need frequent access throughout the day, this door design is a real plus.

Weighing in at just 14 pounds, this is one of the most portable wire pens available. I took it on a weekend road trip and it fit easily in the trunk alongside luggage. The fold-flat design requires no disassembly. You just fold the panels together like an accordion and secure them with the attached clips. Setup at the campsite took about 2 minutes.

The black satin finish on the heavy gauge wire looks clean and resists rust reasonably well. I used it outdoors for several days with morning dew exposure and saw no corrosion. The 8 included ground stakes go through pre-drilled holes in each panel bottom, providing solid outdoor stability on grass. My puppy tested those stakes repeatedly by jumping against the walls and they held firm.

One thing I want to flag is the height. The 24-inch version is adequate for very small puppies but will not contain a jumper. PETMAKER offers this same pen in 30-inch and 42-inch heights, which are worth considering if you have a breed known for climbing or jumping. The larger heights cost slightly more but provide much better containment for active puppies.

Great for Travel and Outdoor Use

If you need a pen for camping, road trips, or outdoor yard time, the PETMAKER is a strong contender. The ground stakes provide excellent stability on grass and dirt. The lightweight construction makes it easy to transport. And the step-through door makes loading and unloading your puppy simple even when you are juggling travel gear. For outdoor-focused puppy parents, this is one of the best portable options available.

Indoor Limitations

On smooth indoor floors, this pen moves around more than I would like. The panels do not have rubber feet, so they slide on hardwood and tile. I placed mine on a yoga mat and that solved the problem, but it is an extra step. The wire spacing is also wide enough for very small puppies to get their paws or snouts stuck, so supervise closely with toy breeds under 8 weeks old.

8. FXW AuraSpace Acrylic Dog Playpen – Best Modern Design

The FXW AuraSpace is unlike any other playpen on this list. Instead of wire or opaque plastic, it uses transparent acrylic panels that let your puppy see everything around them. I noticed an immediate difference in behavior when I used this pen. My puppy was calmer and whined less because she could see me moving around the room. The clear visibility reduced separation anxiety in a way that opaque walls simply cannot match.

The internal divider is a unique feature that lets you split the 12-panel enclosure into two separate areas. I used one side for play and the other for potty training, which worked remarkably well. The divider panel clicks into place with the same tool-free snap system used for the rest of the panels. You can also remove it entirely for one large space.

At nearly 32 pounds, this is the heaviest pen I tested. That weight comes from the thick acrylic panels, which feel solid and premium. The snap-together assembly is straightforward but does require some patience to get each panel aligned correctly. Once assembled, the structure is remarkably rigid. My puppy pushed, pawed, and chewed on the panels without budging them.

The acrylic surface is genuinely waterproof and dust-resistant. Cleaning is as simple as wiping with a damp cloth. After a week of potty training accidents, the panels still looked brand new with no staining or odor retention. The suction cups included for indoor floor stability work well on smooth surfaces like tile and hardwood.

When to Invest in This Pen

This pen is worth the investment if your puppy struggles with separation anxiety. The transparent walls eliminate the isolation that causes many puppies to whine, bark, or panic in enclosed spaces. It is also excellent for homes where aesthetics matter. The modern acrylic design looks like a piece of contemporary furniture rather than a pet enclosure. Multi-pet households can benefit from the divider feature, separating a puppy from resident cats or older dogs while still allowing visual contact.

Considerations Before Purchasing

The price is significantly higher than wire or plastic alternatives, which may not justify the benefits for everyone. The acrylic panels can create mirror-like reflections in bright daylight, which confused my puppy briefly during the first day. Some panels can come undone if you try to move the fully assembled pen across a room, so it is best to assemble it in its final location. Despite these minor issues, the build quality and thoughtful design make this a standout option for the right owner.

9. PETIME Foldable Metal Dog Exercise Pen – Best with Floor Pad

The PETIME exercise pen solves one of the biggest complaints about wire playpens: the lack of a floor. It comes with a fitted 600D Oxford fabric bottom pad that creates a waterproof barrier between your puppy and your floors. For indoor use, this is a game changer. I no longer had to worry about pee soaking through to the hardwood. The pad catches liquids and can be wiped clean or removed for machine washing.

The pen itself is a standard 8-panel wire design with rust-preventive coating. Assembly is straightforward with the thumb-clip system, taking about 3 minutes. The 24-inch height works well for small breed puppies, and PETIME offers 30-inch and 36-inch options for taller breeds. I tested the 24-inch version with my 10-pound puppy and it contained her comfortably.

The Oxford fabric pad attaches to the bottom of the pen with Velcro straps. This keeps it in place during use but does create a potential chewing target. My puppy discovered the Velcro within the first hour and started gnawing on it. I wrapped the exposed straps in duct tape as a workaround, which solved the problem. If your puppy is a heavy chewer, this is something to watch.

For outdoor use, the included ground stakes work well on grass and dirt. The waterproof coating on the panels held up during light rain exposure. I also like that this pen can be configured in different shapes. I used it in a rectangle configuration along a wall to save space in my living room, and the pad still fit properly.

Best for Indoor Floor Protection

If protecting your floors is a top priority, this pen with its included bottom pad is hard to beat. The Oxford fabric is genuinely waterproof and saved my hardwood from multiple potty accidents during training. The pen is also versatile enough for indoor and outdoor use, making it a solid all-around choice for new puppy owners who want the convenience of a built-in floor without buying a separate mat.

Things to Watch Out For

The Velcro attachment system for the floor pad is the main weakness. Puppies that chew will find the straps quickly. The pad can also bunch up or interfere with the door panel opening if not positioned correctly. On smooth indoor floors, the pen slides more than rubber-footed alternatives, so a non-slip mat underneath helps. Despite these issues, the included floor pad makes this one of the most practical playpens for indoor puppy training.

10. Homelio Clear Acrylic Dog Playpen – Best Acrylic with Door

The Homelio clear acrylic playpen offers transparent walls similar to the FXW AuraSpace but at a lower price point and with a built-in door. The door with secure latch is a significant advantage because you get the anxiety-reducing benefits of clear walls plus convenient walk-through access. My puppy adjusted to this pen faster than any other, likely because she could see me and her surroundings at all times.

The 10-panel design provides a generous play area in an octagonal configuration. Assembly uses an interlocking panel system that requires no tools. I had it fully set up in about 8 minutes. The panels slide together and lock with a firm snap. Once connected, the structure feels solid for its weight class. The acrylic material is scratch-resistant and non-toxic, which gave me peace of mind during the chewing phase.

The included suction cups attach to the bottom of specific panels and grip smooth floors like tile and hardwood. On my kitchen tile, the pen stayed put even when my puppy ran into the walls. However, the suction cups did not work well on textured surfaces like matte-finished concrete or heavily grained wood. If your floors have any texture, you may need additional non-slip solutions.

Cleaning is where acrylic pens shine. A quick wipe with a damp cloth removes mud, drool, and accident residue. After two weeks of daily use, the panels still looked clear and new. The material does not absorb odors, which is a big advantage over fabric and some plastic pens. The 23.6-inch height is comparable to the 24-inch wire pens and adequate for small breed puppies.

Best for Style-Conscious Puppy Owners

If you want a playpen that looks modern and clean in your home, the Homelio is an excellent choice. The clear acrylic blends with any decor and does not create a visual barrier in the room. The built-in door makes it practical for daily use, and the suction cups provide stability on smooth floors. This is a great option for apartments, condos, or any home where aesthetics matter as much as function.

Potential Downsides

The suction cup stability system only works well on very smooth, non-porous surfaces. On textured or porous floors, the pen may shift during use. Some users reported difficulty taking the panels apart for storage or reconfiguration. The acrylic panels can also create glare under bright lights or direct sunlight, which may bother some puppies. Despite these points, the Homelio offers strong value in the acrylic playpen category.

How to Choose the Best Dog Playpen for Your Puppy

Picking the right playpen comes down to your puppy’s size, your living space, and how you plan to use it. After testing 10 different models and reading through thousands of user reviews on Reddit and Amazon, here are the factors that matter most when making your decision.

Size and Height Considerations

Your puppy’s current weight and expected adult size should drive your pen selection. For toy breeds under 15 pounds, a 24-inch height pen works well throughout their life. For medium breeds that will grow to 30 to 50 pounds, consider starting with a 30-inch height pen to avoid buying a second one as your puppy grows. For large breeds, 36-inch or 42-inch pens provide the containment you need.

The footprint matters just as much as the height. An 8-panel pen provides roughly 16 square feet of space, which is enough for a bed, toys, water bowl, and potty pad. A 4-panel pen like the IRIS USA gives you about 8 square feet, which is tight for anything beyond short containment periods. Forum discussions on r/puppy101 consistently recommend larger pens to give puppies room to separate their play, sleep, and bathroom areas.

Material Types: Wire vs Plastic vs Acrylic

Wire pens are the most common and affordable option. They are durable, well-ventilated, and work both indoors and outdoors. The open grid design lets your puppy see out but also means determined chewers can get their teeth on the bars. Wire pens are also the most portable, with most models folding flat for storage.

Plastic pens like the IRIS USA offer solid walls that block drafts and prevent chewing. They are lightweight and easy to clean but provide less space per panel and can feel less sturdy than wire or acrylic options. Plastic is a good choice for very small puppies during their first few months.

Acrylic pens are the premium option. They offer transparent walls that reduce anxiety, easy cleaning, and modern aesthetics. The trade-off is higher cost and heavier weight. If your puppy struggles with being confined or you want something that looks good in a visible living space, acrylic is worth the investment.

Indoor vs Outdoor Use

For indoor use, look for pens with rubber feet or suction cups to protect your floors and prevent sliding. The FXW Homeplus and Homelio acrylic pen both excel here. If your floors are hardwood or tile, this is not optional. Sliding pens can scratch floors and create escape opportunities for clever puppies.

For outdoor use, ground anchors or stakes are essential. Most wire pens include them, but plastic and acrylic pens typically do not. If you plan to use your pen on grass, dirt, or a patio, make sure it either comes with ground anchors or has a way to be weighted down. The MidWest, Amazon Basics, and PETMAKER pens all include ground stakes.

Portability and Storage

If you need to move the pen daily or take it on trips, weight and foldability matter. The BestPet pen at 12 pounds is the lightest wire option and folds flat in seconds. The PETMAKER at 14 pounds is similarly portable. Heavier pens like the FXW AuraSpace at 32 pounds are better suited for semi-permanent placement in one location.

Safety Features to Prioritize

Look for rounded edges on all metal parts, secure latching mechanisms on doors, and no gaps wide enough for paws or snouts to get stuck. The FXW Rollick’s rounded ball-top stakes are a good example of thoughtful safety design. Double-locking doors, like those on the FXW Homeplus, provide extra security for clever puppies that figure out simple latches quickly.

If your puppy is an escape artist, choose a pen with a secure connection system. Rod-connected panels like the FXW pens are harder to escape from than clip-together panels. Several Reddit users reported that their puppies learned to pop off the thumb clips on basic wire pens within days. For determined escapees, the FXW AuraSpace acrylic pen has an escape-free design with no gaps or connection points to exploit.

Frequently Asked Questions About Puppy Playpens

Final Thoughts on the Best Dog Playpens for Puppies

Finding the right playpen for your puppy does not have to be complicated. If you want the best overall balance of space, durability, and value, the New World MidWest Exercise Pen is hard to beat with 35,000+ reviews and a 4.7-star rating. For budget-conscious buyers, the Amazon Basics Foldable Metal Playpen delivers reliable performance at the lowest price point. And if you want premium build quality with a patented design, the FXW Rollick Unleashed is the top-ranked playpen on the market.

The best dog playpens for puppies share a few key traits: they are easy to set up, sturdy enough for daily use, and sized appropriately for your growing puppy. Whether you choose wire, plastic, or acrylic, the most important thing is that your puppy has a safe, comfortable space to play and learn. Take the time to measure your space, consider your puppy’s breed and expected size, and invest in a pen that will grow with your dog through those critical early months.