How do I keep an outdoor cat safe?

Outdoor access gives a cat a much richer life and exposes it to a specific set of risks, most of which are addressable. It is worth knowing which measures do the heavy lifting: a night-time curfew and neutering change outcomes far more than anything else on the list, and most of the rest is seasonal or situational.

Safety

What you'll need

• Microchip with current details
• A quick-release safety collar and tag, or none
• A timed or microchip cat flap (optional)
• A GPS tracker (optional)

Step by step

1. Keep the cat in overnight.From dusk until after the morning rush. Road accidents involving cats cluster heavily at night and at dawn and dusk, and cats are more likely to roam further and to encounter other cats then. A timed cat flap that locks in the evening enforces it without a nightly argument, and feeding the main meal in the evening gives the cat a reason to come home.
2. Neuter, and do it before the cat starts roaming.Neutered cats roam far less, fight far less, and are correspondingly less likely to be hit by a car or to pick up infections spread by fighting. It is the single largest behavioural change available and it is usually recommended from around four months.
3. Microchip and keep the details current.It is compulsory in England for owned cats over twenty weeks. The chip only works if the database record has your current phone number and address — a cat that is scanned and traced to an old number does not get home. Update it whenever you move.
4. Use a quick-release collar, or none at all.If you use a collar, it must be a snap-open safety type with two fingers of clearance. Ordinary buckle collars catch on fences and branches and cats have been badly injured getting a foreleg through a loose one. A tag on a quick-release collar is useful because it does not need a scanner, but the chip is what actually gets the cat home.
5. Keep vaccination and parasite treatment up to date.An outdoor cat meets other cats, fleas, ticks and wildlife. Your vet will set the appropriate schedule for vaccination, worming and flea treatment based on the cat's lifestyle, and an outdoor cat's is different from an indoor cat's.
6. Make the garden the safe part of the territory.Fresh water outside, shelter from rain and sun, a route back in, and no slug pellets, rodenticide or weedkiller. Cover or fence a pond, and check that a shed or greenhouse cannot shut the cat in — cats trapped in outbuildings when neighbours go on holiday is a common and avoidable disaster.
7. Deal with antifreeze specifically, in autumn and winter.It tastes sweet, cats will drink it from a puddle on a drive, and very small amounts cause fatal kidney damage. Store it locked away, clear spills immediately, and treat any suspicion of contact as a same-hour emergency. Screenwash containing it is the usual household source.
8. Manage the neighbours and the neighbourhood cats.Tell neighbours the cat is yours, so it is not assumed to be a stray. If another cat is coming in through the flap, fit a microchip-operated one — an intruder in the house is a major source of stress and often the cause of spraying and toileting problems.
9. Keep the cat in when the situation demands it.For at least two to four weeks after moving house, during fireworks periods, after surgery, in extreme weather, and while recovering from illness. A cat let out too soon after a move very often tries to return to the old house.
10. Have a plan for a missing cat.Search the immediate area thoroughly first, including sheds and garages, because most missing cats are shut in something close by. Then contact local vets, rescue centres and the microchip database, and post in local groups with a clear photograph. Speed matters.

Tips

• A GPS tracker on a quick-release collar tells you where the cat actually goes, which is often surprising and occasionally identifies a specific hazard — a busy road crossing, or a neighbour who is feeding it.
• If a cat is being fed elsewhere, a paper collar tag asking the neighbour to stop is more effective and less confrontational than knocking on doors.
• Cats and birds: a collar bell and a night-time curfew both reduce hunting, and keeping the cat in for an hour after dawn helps most of all.

Common mistakes

• Using an ordinary buckle collar — Cats climb and squeeze through gaps. A collar that cannot release traps them, and cats have suffered severe injuries getting a leg through a loose one.
• Not updating the microchip record after moving — The chip number is useless without a current contact. This is the commonest reason a scanned cat is not reunited quickly.
• Letting a cat out immediately after moving house — Cats orientate to territory and commonly attempt to return to the previous home. Two to four weeks indoors first is the standard advice for good reason.
• Leaving antifreeze or screenwash accessible — It is sweet, cats will drink it, and a tiny quantity causes fatal kidney failure. There is no safe level of accessibility.

If it doesn't work

Questions people ask