Start with a Solid Foundation Before the Cat Arrives
The easiest way to stop a dog from chasing a cat is to prevent the chase from starting. If you do not yet have a cat, or if your dog has never lived with one, you can build the right behavior from the beginning by teaching impulse control — the ability to ignore movement and stay focused on you instead. A dog that knows "leave it" and "watch me" will have the tools to resist the urge to chase when a cat finally appears.
Start these commands on objects that move slowly or not at all: a toy on the floor, a treat in your hand, a person walking past at a distance. Once your dog can ignore a stationary object reliably, move to faster motion — a rolling ball, a person jogging by, a toy dragged across the room. The goal is to build a habit of looking at you when something interesting moves, rather than lunging toward it.
This takes weeks, not days. A dog that has spent months chasing squirrels or other dogs will need time to learn a new response. The payoff is that when you finally introduce the cat, your dog already knows what you want.
Key Takeaways
- Teach "leave it" and "watch me" before the cat arrives, using moving objects so your dog learns to ignore motion and focus on you instead.
- Keep the dog and cat physically separated for the first week or two, allowing them to smell each other under doors and through barriers without direct contact.
- Use a leash during all early meetings so you can prevent a chase before it starts and reward calm behavior when ready.
- Reward your dog heavily for ignoring the cat — treats, praise, and play should follow every moment the dog chooses not to chase.
- If your dog lunges or fixates, step between them and reset the situation rather than punishing; the goal is to make ignoring the cat more rewarding than chasing it.
Separate Them Completely at First
Before your dog and cat meet face-to-face, they need to get used to each other's presence without the risk of a chase. Keep them in different rooms for at least one to two weeks. This sounds long, but it prevents a single bad chase from undoing weeks of training.
Let them smell each other under doors and through baby gates. Feed them on opposite sides of a closed door so they associate each other's scent with something good. Swap their bedding or rub a towel on one and place it near the other's sleeping area. A dog that has spent days smelling the cat through a barrier will be calmer when they finally meet.
During this time, continue training impulse control in the room where your dog spends most of its time. The separation is not a break from training — it is part of it.
Use a Leash for Every Early Meeting
The first time your dog and cat are in the same room, your dog should be on a leash. This is not punishment; it is safety and control. A leash lets you prevent a chase before it happens, which is far more effective than trying to stop one that has already started.
Choose a calm time of day when your dog is not overstimulated. Bring the cat into the room on your terms, not the dog's. Keep the leash loose — tension signals anxiety and can make your dog more reactive. Stand between the dog and cat if the dog shows interest, and be ready to gently redirect the dog's attention back to you.
If your dog lunges, do not yank the leash or yell. Instead, step sideways to block the dog's path, then ask for a sit or a look at you. The moment your dog complies, reward with a high-value treat — something better than what the cat offers. Repeat this dozens of times across multiple sessions.
Reward Calm Behavior More Than You Correct Excitement
A dog that chases a cat is usually doing what feels rewarding: the movement is exciting, the chase is fun, and the cat's reaction (running, hissing) is stimulating. To change this, you have to make calm behavior more rewarding than the chase itself.
Every time your dog looks at the cat and does nothing, mark that moment with a word like "yes" and when ready give a treat. Every time your dog sits calmly while the cat is visible, reward. Every time your dog lies down near the cat without reacting, reward heavily. Your dog should learn that the cat's presence predicts treats and praise, not a chase opportunity.
This means you need high-value treats — something your dog loves more than most toys. Chicken, cheese, or small pieces of meat work better than kibble. Use these treats only during cat training, so they stay special.
Interrupt and Reset Rather Than Punish
If your dog does chase the cat despite your efforts, do not yell, hit, or use a shock collar. Punishment teaches your dog to fear you or to chase when you are not watching, not to stop chasing. Instead, interrupt the chase and reset the situation.
Use the leash to gently guide your dog away from the cat. Ask for a sit or a down. Once your dog complies and is calm, let the cat leave the room. End the session on a calm note, not in the middle of chaos. Your dog should learn that chasing ends the fun, not that chasing is dangerous.
If chasing happens repeatedly during a session, the session is too long or the dog is too stimulated. Shorten the time together and try again when your dog is calmer or less tired.
Manage the Environment to Prevent Accidents
Even with training, accidents happen. Until your dog reliably ignores the cat, manage the space so a chase is less likely. Keep the cat's food, water, and litter box in a room the dog cannot access, or use a baby gate that the cat can slip through but the dog cannot. This prevents the dog from chasing the cat to these high-interest areas.
Do not leave them unsupervised together until you have seen calm behavior for several weeks. A dog that has been calm on leash may still chase when you step out of the room. Crate your dog when you cannot watch, or keep them in separate rooms.
Provide the cat with high perches and escape routes. A cat that can jump to a shelf or run to a closed room feels safer and is less likely to trigger a chase by running in panic.
Recognize When Your Dog's Prey Drive Is Too High
Some dogs are bred to chase — terriers, sighthounds, and herding dogs have strong instincts to pursue moving things. Training can reduce chasing, but it may not eliminate it entirely. If your dog has a very high prey drive and has already caught or seriously injured a cat, living together may not be safe.
Signs that the drive is too strong include: your dog fixates on the cat even when calm, your dog ignores treats when the cat moves, your dog has a history of killing small animals, or your dog's body language shows stalking (crouching, staring, slow creeping). In these cases, permanent separation is kinder to both animals than constant management and stress.
If you are unsure, consult a trainer who has experience with prey drive and multi-pet households. They can assess your specific dog and cat and tell you whether cohabitation is realistic.
Frequently Asked Questions
How long does it take to train a dog not to chase a cat?
It depends on your dog's age, breed, and previous experience. A young dog with no history of chasing may show calm behavior in two to four weeks. An adult dog with high prey drive may take two to three months or longer. Some dogs never fully stop wanting to chase but learn to control the impulse when you are present.
What if my dog has already chased my cat and the cat is now hiding?
Start over with complete separation. The cat needs time to feel safe again, and your dog needs to relearn that the cat is not a chase toy. Keep them apart for at least two weeks, then begin the leash training process again. Move more slowly this time, with shorter sessions and more rewards for calm behavior.
Can I use a shock collar or spray bottle to stop the chasing?
No. Shock collars and spray bottles teach your dog to fear you or to chase when you are not around, not to stop chasing. They also increase stress and can make the dog more reactive. Leash control and reward-based training are more effective and safer for both animals.
Is it normal for a dog to want to chase a cat?
Yes. Many dogs have an instinct to chase moving things. The goal is not to eliminate the instinct but to teach your dog to control it and choose not to chase when you ask. Some dogs will always want to chase but can learn to ignore the urge most of the time.
What should I do if my dog corners the cat?
Use the leash to calmly guide your dog away from the corner. Do not make a big scene or yell, as this can escalate the situation. Once your dog is calm and at a distance, let the cat escape to a safe room. Then end the training session and try again later when your dog is less stimulated.