What size crate for a cocker spaniel?
A 30-inch crate (roughly 76cm long) fits most adult cocker spaniels comfortably, whether English or working type. That is a rule of thumb, not a substitute for measuring your own dog, because cockers vary more in build than their similar heights suggest — a stocky show-bred dog and a leaner working-bred dog of the same height need different amounts of room.
How to measure your dog, not just look up a number
Measure your dog standing square on all four legs, from the tip of the nose to the base of the tail (not the tip — the base, where it meets the body). Add roughly 10cm to that figure and that is the minimum internal crate length you are looking for. Then measure from the floor to the top of the head or ears, whichever is taller, and add a similar margin for height.
The point of the extra room is that a dog needs to stand up fully, turn around without folding into a corner, and lie flat on their side with legs stretched out. A crate that is too snug is not cosy, it is restrictive, and a dog who cannot turn around comfortably is more likely to see the crate as somewhere unpleasant rather than somewhere to settle.
Why cocker spaniels typically land on a 30-inch crate
An adult cocker spaniel usually stands around 38–41cm at the shoulder and measures roughly 70–80cm from nose to tail base, which is exactly the range a 30-inch (76cm) crate is built around. It is the same size most manufacturers market for spaniels, beagles and similarly proportioned breeds, which is a useful shortcut once you have confirmed your own dog's measurements against it rather than assuming the marketing is right for every dog with that breed name.
A working cocker who is leaner and rangier than a bench-bred show cocker can sometimes be comfortable in a slightly smaller 24-inch crate, particularly a female. If your dog's actual measurements come out smaller than the breed average, size to the dog in front of you rather than to the breed.
Buying for a growing puppy
A cocker spaniel puppy will reach most of its adult size within the first year, so buying a crate sized for the adult dog from the start is usually cheaper than buying twice — provided you use a divider panel to section off the extra space while they are small. An oversized crate with no divider gives a puppy room to toilet at one end and sleep at the other, which works against house training rather than for it.
Move the divider back every few weeks as the puppy grows, checking against the same nose-to-tail measurement rather than guessing. By the time a cocker is fully grown, usually around 12–14 months, the divider should no longer be needed.
The sizes we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.

Leucillin Antiseptic Skincare Spray for Cats & Dogs
A versatile, alcohol-free antiseptic spray that cleans, soothes, and helps protect your pet's skin from bacteria, viruses, and fungi.
From£16.49

Pressure-Activated Pet Cooling Mat
Press down, feel the cool — this pressure-activated mat absorbs body heat and stays up to 10°C cooler than the room, with no freezing required.
From£34.99

Absorbent Cotton Gauze Swabs for Pets – Pack of 100
Highly absorbent, low-lint cotton gauze swabs produced in clean conditions — a practical first-aid essential available in three size and ply combinations.
From£4.49

Front-Facing Legs-Out Pet Carrier Backpack
A breathable front-carry backpack that holds your small dog or cat facing outward, legs through the openings. Padded adjustable straps and a secure buckle keep them comfortable on walks and rides.
From£8.99
Common questions
- What size crate does a cocker spaniel puppy need?
- The same crate you would buy for the adult dog, fitted with a divider panel that you move back as the puppy grows. Buying a small crate for a puppy and a second, larger one later usually costs more than buying once with a divider from the start.
- Is a 36-inch crate too big for a cocker spaniel?
- It is more room than most cockers need, though it is not harmful on its own. The main downside is that a crate with a lot of spare floor space is harder to make feel secure, and it takes up noticeably more space in a room than a well-fitted 30-inch crate.
- Should I measure my cocker spaniel or trust the breed size chart?
- Measure your own dog. Breed size charts are averages, and cockers span a wider range than their height alone suggests — a stocky bench-bred dog and a leaner working-bred dog of the same shoulder height can need different amounts of length and floor space.
- Do wire crates or plastic crates need different sizing?
- The same nose-to-tail-plus-margin method works for both. Wire crates tend to feel more open at a given size because you can see through the sides, so some owners prefer to go one size up for extra visibility rather than for extra room.
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.