Dog Is Between Crate Sizes: How to Choose the Fit

Measure before you decide

A measurement between sizes is not a flaw in the product. It usually means your dog falls just above one size class and just below the next. Start by measuring the dog's body length from the base of the tail to the tip of the nose and the height from the floor to the top of the shoulders. See how to measure your dog for a crate for the exact technique.

Write down both numbers, then compare them to the interior dimensions of the two crates you are considering. Interior space matters more than exterior size, because the walls, tray, and door frame reduce usable room. The interior vs exterior crate dimensions guide explains why.

Round up when comfort is the goal

If the dog falls between sizes, the larger crate is usually the safer choice for daily use. A dog should be able to stand, turn around, and lie down with its legs extended in a normal position. When a measurement is borderline, the larger option gives more margin for those movements.

Size classes vary by brand, so compare the actual spec sheets rather than relying on names such as medium or large. If your dog is between two common size classes, look at the next class up first. The best 36 to 41 inch crates guide is a good place to compare models, and the same logic applies when the choice is between that class and the best 42 to 47 inch crates class.

When the smaller crate could still work

There are situations where the smaller crate is acceptable. If the dog can stand, turn, and lie down without its head touching the top, and if the crate is used only for short supervised periods, the smaller option can be practical. It takes up less floor space and may fit better in a car or an apartment.

Be careful not to choose a crate that forces the dog to crouch or keeps the tail pressed against the door. A crate that is too small can cause discomfort and make the dog reluctant to enter. If you are choosing between two sizes and the smaller one still gives enough room, you can use it for trips or short stays, and a large dog crate guide can help you compare options in this range.

Use a divider panel for growing puppies

The easiest way to solve the between-sizes problem for a puppy is to choose the larger crate and use a divider panel. This gives the puppy room to grow while keeping the available space small enough for house training. You can move the panel back as the puppy grows, then remove it when the dog reaches adult size. See the best divider dog crates guide for models that include this feature.

A divider is also helpful for adult dogs that are between sizes but prefer a cozy sleeping area. You can temporarily reduce the interior size and adjust it based on how the dog behaves. For step-by-step instructions on installing and moving a divider, read how to use a dog crate divider.

Check door height, bar spacing, and weight capacity

When you move up to the larger size, check that the door opening is tall enough for the dog to enter without ducking awkwardly. A larger crate sometimes has a larger door, but not always. The dog crate door height and opening size guide explains what to look for.

Also check the bar spacing and weight rating. A larger model with wider bar spacing could allow a small dog to squeeze out, while a smaller model with sturdier bars might be more secure. Weight capacity matters for heavy breeds, and you can compare ratings using the dog crate weight capacity explained article.

Behavior and safety come first

A crate should be a calm, safe place. The ASPCA recommends a warm, quiet place to rest, away from drafts, with a clean blanket or pillow inside. If the dog seems anxious in a larger space, try a divider before switching to a smaller crate. The ASPCA also notes that dogs with separation anxiety may try to escape and can injure themselves, so observe how the dog behaves in the crate before leaving it alone.

Young children should be supervised around crates and dogs. The CDC advises supervising young children around dogs, even trusted family pets, and teaching them how to interact safely. Keep the crate in a spot where children cannot open the door or stick their fingers through the bars. For more guidance, see the dog crate safety checklist and the escape-proof dog crates guide.

A simple final decision rule

Start with the larger crate if the dog falls between sizes and needs to grow, needs extra room for a deep chest or long body, or seems likely to appreciate more space. Use a divider if you need to shrink the interior temporarily. Choose the smaller crate only if the dog can stand, turn, and lie down easily, and only after a few supervised trials confirm that it is comfortable.

If travel is part of the plan, check the airline or destination rules separately. The USDA explains that pet travel requirements can include paperwork, and not every crate is accepted by every airline. See airline approved dog crate requirements for more details.

What to pick for your use

Questions

Should I choose the larger crate if my dog is between sizes?

Usually yes. The larger crate gives more room to stand, turn, and lie down. Use a divider if you need to shrink the space for a puppy or a dog that prefers a den-like area.

Is a larger crate too big for house training?

A divider solves this. Keep the usable space small and expand it as the puppy grows. The idea is to avoid giving the dog enough room to eliminate in one corner and sleep in another.

Can I use the smaller crate if the dog is only in it for short periods?

Yes, if the dog can stand, turn, and lie down without its head pressed against the top. Supervise the first few uses and watch for signs of stress.

What should I do if my dog tries to escape from the larger crate?

Check bar spacing and door latch security, then try reducing the space with a divider. The ASPCA notes escape attempts can be a sign of separation anxiety, so address the underlying distress if the behavior continues.

How do I know which size class my dog is between?

Compare your dog's length and height measurements to the interior dimensions listed on the crate's spec sheet. A size chart is a good starting point for identifying the standard classes.