Kroki

Question · Dog

How do I introduce my dog to a cat?

The short answer

Keep the dog and cat in separate parts of the home at first, with a safe, dog-free zone for the cat. Swap smells, then let them see each other through a gate while your dog is on a lead and is rewarded for calm looks and turning away. Watch for staring, freezing and stalking: that is hunting behaviour, and it calls for a behaviour professional before any closer meeting. Kroki, a reward-based training app for puppies and dogs, teaches Leave it and a hand target, two helpers for this.

How to do it, step by step

  1. Find out what your dog already knows about cats

    Ask the shelter, foster home or previous owner how the dog behaves around cats, and read any “cat test” notes with care. A dog that has chased or hurt cats before needs professional help from the start.

  2. Two homes in one for the first days

    Give the cat a room with food, water, litter tray, hiding places and high shelves, closed off to the dog. Swap blankets so each can smell the other first. Rotate who uses which room, so both get used to the scent everywhere.

  3. Practise the basics without the cat

    Make sure your dog responds to its name, Leave it and a hand target in a quiet room before the first meeting. Practise them while someone moves a soft toy or a cat-scented blanket at a distance.

  4. First sight through a gate, on lead

    With your dog on a harness and lead, let it see the cat through a baby gate or a door left slightly open, from as far away as needed. Reward each calm look followed by looking away. End before your dog gets fixed on the cat.

  5. Read the signals and adjust

    A soft, curious dog that sniffs and turns away can move a little closer next time. A dog that stares hard, freezes, trembles, lowers its body or lunges needs much more distance, and these signs are the point to call a professional.

  6. Supervised time together, then trust slowly

    Once both are relaxed through the gate over many sessions, let them share a room with your dog on a lead or trailing line. Separate them whenever you can’t supervise, for weeks or months, and keep the cat’s escape routes free.

Bringing home a puppy instead?

A puppy usually has no history of chasing cats and is still learning how other species communicate, so early, calm meetings have good chances. It mostly needs short sessions, a lead or pen, and an adult who stops play-chasing before it starts. The puppy page explains that gentler route.

What studies tell us about dogs and cats under one roof

A study from Israel used an owner survey and home observations to look at dogs and cats living together. Most pairs were able to build a fairly friendly relationship, regardless of sex. Homes where the cat had arrived before the dog seemed to do better (Feuerstein and Terkel 2008), which is the usual situation when an adult dog joins a cat household.

The same study found that an early first encounter helped, up to about a year in dogs and six months in cats, and that early meetings went along with a better understanding of each other’s body language (Feuerstein and Terkel 2008). A grown dog has missed that window, which does not rule out a good relationship, but it is a reason to go slowly and read both animals carefully.

Using a shock collar or spray to stop a dog chasing cats is still common advice, but rewards work at least as well. In a trial with 63 pet dogs, the group trained with rewards responded better to “Sit” and “Come” after a single cue than the groups trained with remote electric collars (China, Mills and Cooper 2020). A review also found that aversive methods can harm dogs’ physical and mental health (Ziv 2017).

Hunting behaviour vs. curiosity

  • Curiosity: loose body, wagging at mid height, sniffing, looking away easily, responds to its name.
  • Hunting: hard stare, freezing, head lowered, slow stalking, trembling, no response to its name or treats.
  • Over-excitement: barking, whining, pulling on the lead. Add distance and make sessions shorter.
  • Breeds bred to chase small animals, such as many terriers and sighthounds, often need more time and closer support.

Common mistakes with adult dogs

  • Letting them meet loose “to see what happens”. One chase can injure the cat and make every later step harder.
  • Trusting a single good meeting. Calm needs to hold over weeks, in different rooms and moods.
  • Leaving them alone together too early. Use gates or closed doors when nobody is watching.
  • Ignoring the cat’s stress. A cat that hides all day is not “getting used to it”.

When to see a professional

A cat introduction is also about the cat’s health and safety. Get help if:

  • your cat hides, stops eating, over-grooms or pees outside the tray after the dog moves in, or either animal is injured

    Have a vet take a look

  • your dog stalks, stares fixedly, trembles or lunges at the cat, or has chased or hurt cats before

    Get support from professionals

  • your dog has caught or seriously injured a cat, or a cat is bleeding or struggling to breathe

    Emergency: get help now

The help pages list services in Germany, Austria and Switzerland only. Elsewhere, ask your vet practice who they recommend near you.

Frequently asked questions

Can any dog learn to live with a cat?

Many dogs can, but not all. Dogs with a strong drive to chase and catch small animals may never be safe with a cat, and a behaviour professional can help you judge that.

Should my dog wear a muzzle when meeting the cat?

A muzzle can add safety for a dog with an unknown or worrying history, as long as it has learned to wear it happily first. It does not replace distance, a lead and professional advice.

How can I tell if my dog wants to play with or hunt the cat?

A playful dog is loose and bouncy and looks away easily, while a hunting dog goes still, stares and lowers its head. If in doubt, treat it as hunting and add distance.

Is a shelter cat test reliable?

It is a useful hint, but dogs often behave differently in a new home and with a different cat. Treat the first weeks as if you did not know the result.

My dog is fine with our cat but chases cats outside. Is that a problem?

It is common: a familiar cat at home is a different situation from a running cat outdoors. Keep your dog on a lead where cats roam and practise Leave it at a distance.

How do I bring a new cat into a home with my dog?

Use the same steps, but make the new cat’s room its base for longer, since a cat in a new home is already stressed. Let the cat explore the rest of the home while the dog is out.

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