How to Put a Harness on a Cat

Choosing the right harness

Use a harness made for cats, not a collar. VCA advises that cats should always be walked on a harness, because collars are too easily slipped off, and the harness should be sized so your cat cannot wiggle out of it. Vest-style harnesses spread pressure across the chest and are harder to escape; H-style or figure-eight harnesses are lighter and adjustable.

Measure the widest part of your cat's chest just behind the front legs and the neck, then follow the maker's sizing chart. Pair it with a lightweight leash, or choose a harness and lead set that comes together. VCA recommends avoiding retractable or long leashes that could let your cat run up a tree or over a fence.

Step 1: Make the harness familiar

Leave the harness near your cat's bed or food bowl for a few days so it smells like home. Let your cat sniff it and reward each sniff with a treat. Some owners lightly spray it with a synthetic feline pheromone.

Then lay it across your cat's back for a second during a meal or a treat, and take it off. Repeat over several short sessions until your cat ignores it. VCA's training steps start with getting your cat used to the harness indoors with treats and affection.

Step 2: Put it on and fit it

For a vest: lay it over the back with the opening underneath, bring the straps around the chest behind the front legs and clip them. For an H-style: slip the smaller loop over the head, then bring the body strap under the chest behind the front legs and fasten it on top. Give a treat at each step.

Adjust so you can slide two fingers under every strap, no more. Too loose and your cat can back out; too tight and it will rub. Check behind the front legs for pinching. At first, let your cat wear it for a minute or two while eating or playing, then remove it.

Step 3: Wearing it around the house

Many cats freeze, flop over or walk low when they first wear a harness. That is normal. Distract with a wand toy or treats and keep sessions short, then gradually lengthen them over a week or two until your cat moves around normally in it.

Never leave a harnessed cat unsupervised, since straps can catch on furniture. Remove it after each session. If your cat struggles or panics, go back a step and slow down.

Step 4: Add the leash, then step outside

Clip on the leash indoors and let your cat drag it around under supervision so it gets used to the weight, as VCA suggests. Then pick up the end and follow your cat, using treats to lure it a few steps toward you. Never drag your cat by the leash.

Only go outside once your cat is relaxed walking on the leash indoors. VCA advises keeping the first outings very short, such as the front yard or driveway, choosing quiet places, and letting your cat set the pace. Some cats love exploring; others prefer to sit and watch, and that is fine.

Safety outside, and when to ask your vet

Before going out, make sure your cat's vaccinations and flea and tick prevention are up to date; VCA notes outdoor walks increase exposure to strays and parasites. Make sure your cat is microchipped and the details are current. Avoid busy roads, dogs off leash and very hot pavement, and keep walks to quiet, familiar places.

Pick your cat up and go home if it crouches, flattens its ears, hisses or tries to bolt. If your cat is very fearful of the harness or of going outside, talk to your vet; not every cat will enjoy leash walks, and indoor play is just as good.

This page is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your pet.