How to Introduce a Dog to a Cat

Introduce them through a barrier first, for days, before they are ever in the same open room, and keep the dog on a leash for the first several weeks of shared space. Done properly, most dog and cat introductions take two to six weeks. Rushing it is what produces the chased cat who lives on top of the refrigerator for the next three years.

Before you start, be honest about what you are working with. A dog who watches a cat with a loose body, soft eyes, and a wagging tail is curious. A dog who goes still, drops their head, locks their eyes, and stops breathing normally is hunting. Those are different situations and the second one needs professional help, not a blog post.

Set the house up first

Give the cat vertical escape everywhere. Cat trees, shelves, cleared counters, a route from any room to a high place. A cat who can always get up is a cat who does not panic.

Put the litter box and cat food where the dog cannot reach. Behind a cat door or up on a surface. Dogs eating from litter boxes is nearly universal and it makes cats stop using the box, which creates a whole second problem.

Set up a dog free room. The cat gets somewhere with a closed door or a gate the cat can jump and the dog cannot. This is not temporary. Keep it permanently.

The five stages

Stage one, scent only, three to five days. They never see each other. Swap bedding. Rub a towel on the cat and leave it near the dog's bed and the other way around. Feed them on opposite sides of a closed door, moving the bowls a few inches closer each meal, so each animal is eating while smelling the other.

Stage two, barrier visual, three to seven days. A baby gate with a blanket over the bottom half, or a cracked door. The dog is on leash. Let them see each other for 30 seconds, then feed the dog and walk away. Repeat a few times a day. Build up to five minutes of the dog lying calmly on place while the cat exists on the other side.

The behavior you are looking for is the dog looking at the cat and then looking back at you on their own. That check in is the green light for the next stage. If the dog is fixated, whining, barking, or lunging at the gate, you stay here.

Stage three, same room, leash on, one to two weeks. Dog on a leash, ideally on place with a chew, cat free to come and go. Short sessions, five to ten minutes, several a day. Never let the dog approach the cat. If the cat approaches the dog, that is fine, but call the dog off and pay them for it.

Feed the dog for calm. Every few seconds at first, then stretching out. You are paying for boredom.

Stage four, dragging leash, one to two weeks. Same room, leash on but not held, you present and paying attention. This gives you something to step on if you need it without holding the dog back constantly. Any chase, even a playful one, and you go back to stage three for a week.

Stage five, supervised freedom. Off leash together while you are in the room and awake. Separated any time you leave the house. Most households should stay here permanently with a small or timid cat.

The rule that matters most

Never let a chase happen, not even once, not even in fun. Chasing is self rewarding. One good chase around the living room can undo two weeks of work, because the dog just learned that cats run and that running after them feels great.

If a chase starts, do not yell and do not run after the dog, both of which add to the game. Get between them, block, and calmly leash the dog. Then go back a stage.

What to teach the dog on the side

Three things make this much easier and none of them involve the cat.

A rock solid place command. If the dog will hold a cot for 20 minutes with a chew, most of the daily friction disappears.

Leave it, generalized to moving things. Practice with rolling balls and tossed toys before you ever use it on the cat.

A name response that cuts through. If you can get a head turn away from something interesting, you can interrupt at the stare instead of the chase.

Being honest about breed and history

Some dogs are much harder here. Terriers, sighthounds, some herding breeds, and any dog with a history of killing small animals. That does not mean it cannot work, and I have seen plenty of greyhounds live with cats. It means the process takes months instead of weeks and the permanent management is not optional.

If your dog has actually caught or injured a small animal, do not try to manage this yourself. Get in person help and be prepared for the answer to be permanent separation.

Signs it is going well: the dog stops tracking the cat with their eyes, the cat comes down to floor level voluntarily, both eat in the same room. Signs it is not: the dog stares without blinking, the cat stops using the litter box or stops eating, or the dog starts patrolling where the cat sleeps.

For a full plan on settling a new dog into a household with existing pets, my free rescue guide

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Every drill in this article comes from the WorldWide K9 Academy course library. If you want the full step by step system, start with the $5 intro course.