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Puppies & New Dogs

Crate Training for Dogs: Pros and Cons, and How to Crate Train a Puppy

Is crate training cruel or kind? The real pros and cons, the three-hour limit UK charities agree on, what size crate to buy, and a step-by-step plan for crate training a puppy.

Updated 19 October 2026

A merle border collie puppy lying calmly in an open wire crate

A crate can be the best thing you buy for a new puppy or a cage they dread, and the difference is almost entirely in how it is introduced and how long it is used. Done well, it gives a dog a den of their own, speeds up toilet training and keeps a curious puppy safe when you cannot watch them. Done badly, it becomes a place a dog is shut away in.

This guide covers the honest pros and cons, the time limits UK welfare charities agree on, and a step-by-step plan for crate training a puppy.

Is Crate Training Cruel?

No, as long as the crate is a choice and not a punishment. The RSPCA, PDSA, Dogs Trust and Blue Cross all give advice on crate training, and all describe the same thing: a comfortable, open den the dog learns to like, used for short periods. The same charities are equally clear about where it goes wrong:

  • using the crate as a punishment or a "time out"
  • leaving a dog shut in for long stretches
  • forcing a frightened dog in, or leaving one in that is panicking

If your dog chooses to nap in their crate with the door open, it is working.

The Pros of Crate Training

  • A safe den. Many dogs like a small, covered space to retreat to, especially in a busy house, during fireworks or when visitors arrive.
  • Faster toilet training. Most puppies avoid soiling the place they sleep, so a correctly sized crate encourages them to hold on until they are let out, which gives you predictable toilet trips to reward.
  • Safety when you cannot supervise. A young puppy left loose can chew cables, swallow socks or get into the bin. A short spell in a crate while you shower or answer the door keeps them out of trouble.
  • Calmer travel and vet stays. A dog used to a crate copes better with travel, boarding, and the cage they may have to rest in after an operation.
  • Car safety. The Highway Code says dogs in a car must be suitably restrained, and lists a dog cage or pet carrier among the ways to do it.

The Cons, and the Risks

  • It is easy to overuse. A crate is convenient, and convenience creeps. A dog that spends most of the day in one is missing exercise, company and things to do.
  • It does not fix behaviour. A crate can stop a puppy chewing the sofa while you are out, but it does not teach them not to. The RSPCA says crates must never be used to prevent unwanted behaviours such as destroying furniture.
  • A bad start can make it worse. A dog forced in and left crying can learn to fear the crate, and some dogs with separation anxiety panic when confined.
  • The wrong size causes problems. Too small is cramped and uncomfortable. Too big, for a puppy, leaves room to use one end as a toilet.
  • It takes time. Proper crate training usually takes a few weeks of short, positive sessions.

How Long Can a Dog Be in a Crate?

The charities are consistent:

Source Guidance
PDSA Never more than three hours at a time, and less for a dog not used to it
RSPCA Adult dogs happy in their crate are normally fine for about three hours. Do not leave a dog in a crate all day while you go to work
Blue Cross Build up gradually to a maximum of three hours

Puppies need much shorter spells, because they cannot hold their bladder for long. Overnight is the exception people ask about most. A young puppy will usually still need a toilet trip in the night, so expect to get up for the first few weeks, and consider a playpen, which Dogs Trust suggests can suit nights better because it gives more room to move.

Before any time in the crate, make sure your dog has been exercised, fed, had some play and been out to the toilet.

Choosing the Right Crate

Size. PDSA's rule is that the crate should be tall enough for your dog to stand and sit without touching the top, and wide and long enough to turn around, lie down and stretch out fully. For a puppy, buy the adult size and use a divider panel, moving it back as they grow.

Type.

Type Good for Watch out for
Wire Home use, airflow, seeing out Can feel exposed without a blanket over it
Plastic Travel, dogs who like a cosier den Less airflow, bulkier to store
Fabric Travel and visits, lightweight Not for puppies or chewers, harder to clean

Where to put it. Somewhere quiet but not cut off, such as a corner of the living room, out of direct sun and away from radiators and draughts. Blue Cross suggests a family area where your dog can see what is going on, so they do not feel left out.

What goes inside. Soft bedding, a non-spill water bowl, a safe chew toy and, while they settle, something that smells of you. A blanket over the top and sides, with the front left open, makes it cosier and cuts draughts and noise.

How to Crate Train a Puppy, Step by Step

Go at your puppy's pace. Each step can take a day or several.

  1. Make it a nice place before you close the door. Leave the crate open with bedding inside, drop treats in when your puppy is not looking, and let them find them.
  2. Feed meals in it. Put the bowl near the crate at first, then just inside, then at the back.
  3. Reward going in. Use a cue such as "bed", toss a treat in, and praise when they step inside. Let them come straight back out.
  4. Close the door for a few seconds. Give a long-lasting chew, close the door while you sit beside the crate, and open it again before they ask to come out.
  5. Build up time with you nearby. Lengthen it a little at a time while you potter about in the room.
  6. Step out of sight briefly. Leave the room for a few seconds, then a minute, then a few minutes, coming back before they get upset.
  7. Practise short absences. Once they settle happily with you out of the room, try leaving the house for a few minutes, building slowly towards longer spells, but never past the limits above.

If your puppy whines, scratches or tries to get out, you have gone too fast. The RSPCA, PDSA and Dogs Trust all give the same advice: go back to the last stage where they were comfortable, and build their confidence there before trying again. If they are panicking, panting heavily or drooling, stop, and talk to your vet.

Never use the crate as a punishment. Every charity says the same thing, and it is the quickest way to undo the training.

Crate Training an Adult or Rescue Dog

Adult dogs can learn to love a crate too, but go more slowly, especially with a rescue dog whose history you do not know. Some have been shut in cages for long periods and find any confinement frightening. If a dog shows real distress even with the door open, a baby gate across a doorway or a playpen may suit them better.

When a Crate Is Not the Answer

  • Separation anxiety. A dog who panics when left alone often gets worse when shut in. Our guide to separation anxiety covers how to help.
  • Long days alone. If you are out at work, a crate is the wrong tool. A dog walker, a friend or day care, with a safe room or playpen, is kinder.
  • A dog that never settles. If weeks of slow, positive training have not helped, talk to your vet, who can refer you to a qualified behaviourist.

Sources

Checked on 19 October 2026.

Common questions

Is crate training cruel?

Not when it is done properly. UK welfare charities including the RSPCA, PDSA, Dogs Trust and Blue Cross all describe a crate as a safe den when a dog is introduced to it gradually and kindly. It becomes cruel when it is used as punishment, when a dog is shut in for hours at a time, or when a dog is forced into it while frightened.

How long can a dog stay in a crate?

UK charities agree on about three hours as the upper limit for an adult dog that is happy in its crate. PDSA says never more than three hours at a time, and less for a dog not used to it. Blue Cross calls three hours the maximum. Puppies need far shorter spells, because they cannot hold their bladder for long.

Should I crate my dog while I am at work?

No, not for a full working day. The RSPCA says a dog should not be left in a crate all day while you go to work. If you are out for longer than a couple of hours, arrange a dog walker, a friend or day care, and use a puppy-proofed room or playpen rather than a closed crate.

What size crate does my dog need?

Big enough to stand without touching the top, turn around, lie down and stretch out fully, as PDSA puts it. For a puppy, buy the crate for their adult size and use a divider, so the space grows with them without becoming big enough to use one end as a toilet.

Should my puppy sleep in a crate at night?

It can work well once the crate is somewhere your puppy already likes, but it is not the only option. Dogs Trust suggests a playpen can be more suitable at night because it gives more room to move. Either way, a young puppy will usually still need a toilet trip in the night for the first few weeks.

Can I use a crate to stop my dog chewing or barking?

Not as a fix. The RSPCA says crates must never be used as a punishment or to prevent unwanted behaviours such as destroying furniture. A crate can keep a young puppy safe while you cannot supervise, but chewing, barking and anxiety need training, and sometimes help from your vet or a behaviourist.

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