Advice · 4 min read · Updated 6 November 2026
Do indoor cats need a catio? Benefits, welfare and what to expect
Why so many UK cats are kept indoors
More owners now keep cats indoors, or mainly indoors, than a generation ago. Common reasons include living near a busy road, living in a flat, having a deaf, blind or elderly cat, owning a pedigree breed, or concern about wildlife. UK cat welfare charities generally accept that cats can live happily indoors, provided their environment gives them enough to do.
The problem is that indoor life can be predictable. Boredom and frustration are linked to overgrooming, weight gain, scratching furniture and spraying, and many indoor cats spend long periods staring out of windows at a world they cannot reach.
What a catio adds that a house cannot
- Natural light and fresh air
- Birds, insects and moving leaves to watch
- Changing scents from the garden
- Different surfaces underfoot: grass, bark, stone
- Climbing and jumping at height
- A place to retreat when the house is busy or noisy
Even a small window box changes a cat's day. A walk-in catio with shelves and planting goes further, giving room to run, climb and patrol, which helps with weight and fitness.
Indoor cats are more prone to weight gain than cats with outdoor access, and obesity is linked to diabetes, arthritis and a shorter life. Extra movement in a catio is not a cure on its own, but combined with portion control and play it helps keep a cat lean.
Cats that benefit most
| Type of cat | Why a catio helps |
|---|---|
| Young, active indoor cats | Burns energy that otherwise goes into play-fighting and mischief |
| Cats living near main roads | Outdoor time without traffic risk |
| Deaf, blind or three-legged cats | Safe space where hazards are controlled |
| Cats with FIV or other health conditions | Fresh air while limiting contact with other cats |
| Cats in flats | Balcony or window enclosure brings the outside in |
| Multi-cat homes with tension | Extra territory and escape routes reduce conflict |
Catio or free roaming?
Free roaming gives a cat the most choice, but it brings risks: road traffic is one of the most common causes of death in young outdoor cats, and roaming cats also face fights, injuries, theft and getting shut in sheds or garages. A catio removes most of those risks while keeping the benefits of being outside.
Some owners use a mix, with a catio for daytime and free access to the garden only under supervision, or a fully cat-proofed garden so the whole space becomes a large enclosure.
Settling in and what to expect
Most indoor cats are cautious at first. Expect a few short visits where the cat sniffs around and comes back in, then longer stays once it feels safe. Familiar bedding, a favourite shelf near the door and quiet first sessions help. Some cats take to it in a day; nervous cats can take a few weeks.
Once settled, many owners find their cat is calmer and sleeps better indoors, because some of its need to explore has been met.
Making the most of a small space
Height is more useful than floor area. Two or three shelves at different levels, a sturdy scratching post and a covered hidey spot will keep a cat busier than an empty larger run. Rotating toys, adding a pot of cat grass and changing the layout occasionally keep the enclosure interesting.
Health checks before your cat goes outside
An indoor cat that starts spending time in a catio is exposed to things it has not met before: fleas carried by visiting cats and wildlife, ticks from long grass, and insects such as wasps and bees. None of this is a reason to avoid a catio, but it is worth a quick check with your vet before the first season.
- Make sure vaccinations are up to date, as your vet may recommend a different schedule for cats with outdoor access
- Start regular flea and worming treatment if your cat has not needed it indoors
- Check your cat for ticks after time near long grass or planting
- Keep the microchip details current, which is a legal requirement in England
- Watch for stings, swelling or limping after the first warm days
- Keep the cat inside the house if it is unwell or recovering from treatment
Mesh keeps other cats out, so the risk of fights and the diseases spread by bites is far lower than for a free-roaming cat. That is one of the main health advantages of an enclosure over open access to the garden.
Frequently asked questions
Is it cruel to keep a cat indoors?
Not necessarily. Many cats live long, healthy lives indoors when they have space, play, places to climb and hide, and companionship. Welfare problems tend to come from boredom and lack of stimulation rather than from being indoors as such. A catio is one of the most effective ways to add that stimulation safely.
How much time should my cat spend in the catio?
There is no set amount. Ideally the cat chooses, with a cat flap giving access whenever it wants during the day. If access is supervised or timed, a few sessions a day works well. Close the enclosure at night if it is not fully secure, and always make sure the cat can get back to shelter and water.
Will a catio make my indoor cat want to escape?
Usually the opposite. Cats that get regular outdoor time in an enclosure tend to be less frustrated at doors and windows. A few cats become keener to get outside, so make sure the catio is properly escape-proof, with no gaps, and use a double-door entry if you walk in and out of it.
indoor cats welfare enrichment behaviour
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