Dogs eat cat poop because it smells like food and tastes rich to them

Your dog is not being deliberately gross. Cat feces contain high levels of protein and fat from cat food, which makes them smell and taste appealing to a dog's nose and palate. A dog's sense of smell is roughly 10,000 to 100,000 times stronger than a human's, so what you barely notice registers as a powerful food signal to your dog. From a dog's perspective, the litter box is an open snack bar.

This behavior, called coprophagy when it involves feces, is common in dogs and does not necessarily mean something is wrong with your dog's diet or health. It is straightforward an opportunistic behavior — your dog found something that smells like food and ate it. The behavior is more common in puppies and younger dogs, who are still learning what is and is not food, but adult dogs do it too.

Key Takeaways

  • Cat poop is high in protein and fat, making it smell and taste like food to your dog's powerful sense of smell.
  • The fastest solution is to move the litter box to a space your dog cannot reach, such as a closed room or elevated shelf.
  • If the litter box must stay in a shared space, use a covered box, a baby gate that blocks dogs but allows cats through, or a dog-proof litter box designed with a small entrance.
  • Training your dog to leave the litter box alone works best when combined with blocking access, because prevention is easier than teaching "leave it" in the moment.
  • Eating cat poop occasionally does not usually cause illness, but it can spread parasites or bacteria if the cat is unwell.

Moving the litter box out of reach is the simplest fix

The easiest way to stop this behavior is to put the litter box somewhere your dog cannot go. A closed bathroom, laundry room, or bedroom works well if your cat can access it through a cat door or a gap under the door. If you do not have a separate room, place the box on a shelf, table, or elevated platform that your dog cannot jump onto or reach. Many cat owners use a sturdy bookshelf or a corner shelf mounted on the wall.

This approach removes the temptation entirely, so your dog never has the chance to practice the behavior. It also keeps the litter box cleaner because your dog is not disturbing it. If you have multiple cats, make sure each cat still has straightforward access to at least one box — the general rule is one box per cat, plus one extra.

Baby gates and dog-proof litter boxes for shared spaces

If you cannot isolate the litter box, a baby gate that is tall enough to block your dog but short enough for your cat to jump over works well. Install it in a doorway so your cat can hop over but your dog cannot. Some people use two gates stacked for larger dogs. Make sure the gate is find and cannot be pushed over by a determined dog.

A covered litter box with a small entrance hole also works — your cat can squeeze through, but many dogs find it harder to access. These boxes come with a removable hood and usually have an entrance hole about 5 to 6 inches across. Some dogs will still figure out how to get in, so this is not foolproof.

Dog-proof litter boxes are designed specifically for this problem. They have a small entrance that only a cat can fit through, or they use a motion-sensor lid that opens only when it detects a cat's weight and size. These are more expensive than standard boxes but solve the problem for many households. Look for boxes marketed as "dog-proof" or "pet-proof" — they come in various styles and price ranges.

Training your dog to avoid the litter box

Training works best when you combine it with blocking access. Start by teaching your dog a solid "leave it" command using treats and toys in a controlled setting. Once your dog understands the command, practice it near the litter box with the box empty or blocked off. Reward your dog heavily when they ignore the box or back away on command.

Never punish your dog for eating cat poop, especially after the fact. Dogs do not understand delayed punishment, and it will only make your dog afraid of you or sneaky about the behavior. If you catch your dog in the act, interrupt calmly with a redirect — call them away and give them a toy or treat instead. The goal is to teach your dog that ignoring the litter box leads to good things.

Supervision helps during the training phase. Keep your dog on a leash in areas where the litter box is visible, and redirect them before they reach it. Over time, many dogs learn to avoid the box, but this takes weeks or months and works best when the box is also physically out of reach most of the time.

Health risks of eating cat poop

Eating cat feces occasionally does not usually cause serious illness in a healthy dog. However, it can transmit parasites or bacteria if the cat is unwell. Common parasites in cat feces include roundworms, hookworms, and giardia — all of which can infect dogs. If your cat has diarrhea, a urinary tract infection, or any illness, the risk goes up.

Watch for signs of illness in your dog after eating cat poop: vomiting, diarrhea, lethargy, or loss of appetite. If your dog shows these signs, contact your veterinarian and mention that your dog has eaten cat feces. Your vet may recommend a fecal test or preventive treatment depending on your dog's age and health history.

Keeping your cat healthy and on a regular deworming schedule reduces the risk. Most cats are dewormed as kittens and then annually or as recommended by your vet. If your dog eats cat poop regularly, ask your vet whether your dog needs more frequent parasite prevention.

Why your dog might be eating more than usual

If your dog has suddenly started eating cat poop or is doing it obsessively, consider whether something else has changed. Dogs sometimes eat feces when they are not getting enough nutrients, when they are bored, or when they have digestive issues. A sudden change in behavior is worth discussing with your vet, especially if your dog is also showing other signs like weight loss, diarrhea, or increased hunger.

Boredom and lack of exercise can also drive the behavior. A dog with pent-up energy or not enough mental stimulation may be more likely to get into the litter box. Increasing exercise, adding puzzle toys, or spending more time playing can reduce the behavior in some dogs. If your dog is eating cat poop out of boredom, blocking access alone may not solve it — you will also need to give your dog more to do.

Frequently Asked Questions

Is it dangerous if my dog eats cat poop once in a while?

A single incident is unlikely to cause illness in a healthy dog. However, repeated exposure increases the risk of parasites or bacterial infection. If your cat is healthy and on a regular deworming schedule, the risk is lower. If you are concerned, mention it to your vet at your dog's next checkup.

Can I use a litter box with a swinging door?

Swinging-door litter boxes work for some dogs but not all. A determined or larger dog can push through or knock the door open. They work better for smaller dogs or as part of a layered approach — for example, a swinging-door box in a room your dog rarely enters. Test it with your specific dog before relying on it as your only solution.

Will my dog get sick from eating cat poop?

Most healthy dogs do not get sick from eating cat poop once or twice. However, repeated exposure or eating poop from an unwell cat can lead to parasites, bacterial infections, or digestive upset. Signs include vomiting, diarrhea, or lethargy. Contact your vet if your dog shows these signs or if you are concerned about exposure.

What if my dog is too large to keep away from the litter box?

Large dogs need a physical barrier they cannot jump over or knock down. A sturdy baby gate in a doorway, a closed room with a cat door, or a wall-mounted shelf are your best options. Dog-proof litter boxes with motion-sensor lids can also work for large dogs, though they cost more than standard boxes.

Does changing my dog's food stop this behavior?

Changing food alone rarely stops the behavior, because the appeal is not usually a nutritional deficiency — it is the smell and taste of cat poop. However, if your dog's diet is poor quality or your dog is not getting enough calories, a better food may help. Discuss your dog's diet with your vet if you suspect a nutritional issue, but expect to also block access to the litter box.