Dogs and Cats: How to Help Them Live Together Under One Roof

In brief

Dogs and cats can live together peacefully under suitable conditions, although their communication and behavioral systems differ. In surveys of people who own both, the relationship was often described as peaceful or low-conflict, although a truly close bond was less common. Four things matter. First: in one study, meeting at a young age and a cat that lived in the home before the dog were associated with a better relationship. Second: in one survey, how comfortable the cat was with the dog was more strongly linked to a peaceful relationship than how comfortable the dog was. Third: puppies introduced to the cat early and gradually were more likely to show only desirable behavior. Fourth: predatory behavior is the point where curiosity can become dangerous, and you can’t judge it from sight alone.

This guide shows what the studies on dogs and cats living together say, how to prepare your home, what a step-by-step introduction can look like, and how to tell when things aren’t going well.

1. How well do dogs and cats get along?

1.1 Usually peaceful, rarely close

Feuerstein and Terkel (2008) surveyed owners who had at least one dog and one cat and also observed the animals’ behavior in their homes. Both species were similarly able to build a relatively amicable relationship with the other. The animals’ sex made little difference.

A survey from Italy with 1,270 owners of both species found a similar picture (Menchetti et al., 2020). In 68.5 percent of homes, dog and cat slept together at least occasionally, and in 62.4 percent they played together. At the same time, they usually ate in different places, and the roles were uneven: 42.8 percent of dogs licked the cat, and 41.8 percent of cats ignored the dog, in each case more often than the other way around.

Thomson, Hall and Mills (2018) also found that most owners rated their dog-cat relationship as amicable. Few described it as truly close, though. Sharing food or resting places and grooming each other were uncommon. So peaceful usually means: they leave each other alone.

1.2 Two languages

Dogs and cats use some signals differently. A well-known example is the tail: a lashing tail in a cat tends to signal arousal or irritation, while a wagging tail in a dog can mean something quite different. Feuerstein and Terkel (2008) found behavioral responses consistent with functional interspecies understanding, which was more pronounced when the animals had met earlier in life. Menchetti et al. (2020) also report that most dogs and cats responded calmly to approaches from their housemate.

1.3 The cat’s comfort is particularly important

Thomson et al. (2018) found two things that surprise many people. First, cats showed threatening behavior toward the dog more often than dogs did toward the cat. Second, factors on the cat’s side were stronger predictors of a relationship rated as amicable than factors on the dog’s side. In practice, this means the cat’s sense of safety and comfort deserves particular attention.

2. What makes living together easier

2.1 Meeting early

In the study by Feuerstein and Terkel (2008), the relationship was better when the animals had met at a young age, cats up to about six months and dogs up to about one year. Thomson et al. (2018) also found that cats introduced to dogs at a young age were more comfortable around them.

👉 The sensitive period in puppies: brain and behavior

2.2 The order of arrival

In Feuerstein and Terkel (2008), an amicable relationship was more likely when the cat had come into the home before the dog. One possible explanation is that the cat then already knows its territory, its routes and its retreats. That is an interpretation, not a finding of the study. If it’s the other way around in your home, that doesn’t mean it can’t work. It only means you should give the cat as much security as possible.

2.3 Gradually rather than all at once

Kinsman et al. (2022) analyzed 1,211 puppies from a large UK long-term study that joined households with cats. The puppies’ most common behavior toward the cat was playing (58.9 percent), followed by overexcitement (56.6 percent) and chasing (48.6 percent). Only 7.3 percent showed only desirable behavior, such as calm disinterest. An early introduction before 12 weeks of age, a gradual approach and a household with more than one dog were associated with higher odds of only desirable behavior.

The data show that excited, playful and chase-like behavior was commonly reported during the early period with cats. Chasing should still not become a habit, because repeated chasing can burden the cat and the behavior can become established over time.

3. Predatory behavior: when curiosity tips over

Predatory behavior is a sequence of steps: orienting, eyeing, stalking, chasing, grabbing. Not every dog that runs after a cat wants to catch it. But eyeing and chasing belong to the same sequence as grabbing.

👉 Predatory behavior in dogs

Hoffman et al. (2017) tested 69 dogs with three kinds of cat cues: a realistic cat doll, cat sounds and cat urine. The dogs responded most strongly to the sounds. Dogs that, according to their owners, had previously injured or killed cats or other small animals attended to the cat sounds for especially long. They did not respond noticeably differently from the other dogs to the doll or the smell. This suggests that a brief purely visual test may not capture all relevant responses a dog has to cats, especially when a real cat moves or makes noise.

In practice: take these signs seriously when your dog sees the cat:

• Eyeing with a fixed stare, often with the head lowered.
• Freezing or a crouched, creeping approach.
• Marked trembling, whining or low responsiveness indicate high arousal, but are not by themselves evidence of predatory behavior.
• Chasing immediately as soon as the cat moves or runs away.

These signs don’t automatically mean the dog will hurt the cat. They do mean that, for now, encounters should only happen under safe management.

4. Preparing your home

The guidelines on the environmental needs of cats from the American and the international feline medicine associations name five pillars. Two of them matter most when living with a dog: a safe place to retreat and multiple, separated resources such as food, water, litter box, scratching area, play area and resting place. According to the guidelines, elevated areas increase the cat’s space and let it monitor its surroundings (Ellis et al., 2013).

In practice, this means:

• Retreats the dog can’t reach. Cat trees, shelves, windowsills, a room with a baby gate or door gate only the cat can get through.
• Routes up high in every room. The cat must always be able to get out of the dog’s reach without having to pass him.
• Cat food raised or separated. Many dogs will eat cat food if they can. Eating is also a situation in which resource guarding can occur.
• Litter box out of the dog’s reach. The litter box should be in a quiet place the dog can’t access, so the cat can use it undisturbed. Some dogs also eat cat feces.
• Separate resting places for both. If they later choose to lie together, all the better. Don’t force it.

👉 Resource guarding in dogs

👉 Coprophagia in dogs

5. Step-by-step introduction

A veterinary review recommends introducing new pets gradually and under control, rewarding desirable behavior and seeking professional help early if problems arise (Bergman & Gaskins, 2008). That is a recommendation from clinical practice. There is no study that directly compares different ways of introducing dogs and cats. The following steps are one possible practical approach from training.

5.1 Scent first

In practice: keep dog and cat in separate areas for the first few days. Swap blankets or bedding so both get to know each other’s scent without meeting. Feed both on opposite sides of a closed door if they stay relaxed while doing so.

5.2 Seeing each other, with distance

In practice: first visual contact happens behind a gate, with the dog on leash or given a task, such as lying on his mat and being rewarded for it. The cat comes voluntarily and can leave at any time. Reward your dog for looking at the cat and then turning back to you. Keep sessions short and stop while both are still relaxed.

👉 Desensitization and counterconditioning in dogs

5.3 Together in one room

In practice: only once your dog stays calm behind the gate do both come into the same room. The dog wears a house line so you can hold him back without rushing. The cat has elevated places and a clear way out. Chasing isn’t made possible in the first place.

5.4 Free encounters

In practice: leave both together unsupervised only once they have been relaxed with each other in many situations over a longer period. Until then, they are separated whenever nobody is there. How long this takes varies greatly between individuals. What matters is not a fixed timeline but the behavior of both animals at each step.

6. Recognizing stress in your cat

In the owners’ free-text answers, Kinsman et al. (2022) found that cats responded to the new puppy with behaviors including aggression and avoidance. The authors interpret such behavior as a sign of stress. At the same time, some owners accepted it as a normal part of settling in.

In practice: watch your cat for these signs:

• She hides much more than before or avoids certain rooms.
• She eats less, stops coming to the bowl or only comes when the dog is gone.
• She starts eliminating outside the litter box or marking.
• She often hisses, swats or growls, even when the dog isn’t pressuring her.
• She grooms excessively or withdraws from people as well.

If such signs persist for several days, go back a step and give the cat more distance and places to retreat. Also have her examined by a veterinarian if she eats less or eliminates outside the litter box, because an illness can be behind it.

👉 Measuring stress in dogs

7. When an adult dog moves in

With a puppy, you know the history. With an adult dog from a shelter or rescue, you often don’t. So ask specifically whether the dog has lived with cats before and how it went. The label “good with cats” is often based on a brief encounter. Hoffman et al. (2017) show that dogs can respond strongly to cat sounds. A brief calm encounter with a cat sitting still is therefore only limited evidence for how the dog will respond at home to a cat that moves or vocalizes.

In practice: with an adult dog whose experience with cats is unknown, plan the introduction under safe management from the start, with a gate and a leash. A muzzle the dog has been calmly conditioned to beforehand can be an additional safeguard during the first shared encounters in a room.

👉 Muzzle training for dogs

8. Do pheromones help?

Prior and Mills (2020) compared two pheromone diffusers, one for dogs and one for cats, in 34 homes with a dog and a cat. The study was randomized and blinded. After six weeks, owners in both groups reported fewer undesirable interactions, such as chasing, hiding, staring or barking. There was no placebo group, however. The groups were small, and most participants worked with animals professionally. Ceva Animal Health supplied the products free of charge and later paid the open-access fee; according to the paper, the company had no role in the design, execution or publication, and the authors declared no conflict of interest. Without a placebo group, the study cannot separate product-specific effects from time, observation and other changes in the household.

👉 Pheromones and supplements for dogs

9. When to get help

Get professional help if your dog keeps eyeing, chasing or grabbing the cat despite training, if he has already injured her, or if the cat doesn’t settle for weeks, hides, eats less or eliminates outside the litter box. Until then, keep both consistently separated whenever nobody is supervising.

👉 Dog trainer or behavior consultant?

10. A note on the evidence

The studies on dogs and cats living together rely mostly on owner reports (Feuerstein & Terkel, 2008; Thomson et al., 2018; Menchetti et al., 2020; Kinsman et al., 2022). Only Feuerstein and Terkel also observed the animals at home. Owners who take part in such surveys aren’t necessarily typical, and homes where living together failed and an animal was rehomed are hardly represented. The links with age and order of arrival are observations, not evidence that these factors cause the relationship.

The study on cat cues (Hoffman et al., 2017) included 69 dogs, and the information about previous incidents involving cats or other small animals came from the owners. Whether cat sounds can predict which dog is a danger to a cat has not yet been tested. The pheromone study (Prior & Mills, 2020) has no placebo group. The feline environmental guidelines (Ellis et al., 2013) and the review on introducing new pets (Bergman & Gaskins, 2008) are professional recommendations, not comparative studies. The introduction steps in this guide are therefore marked as practical experience.

11. Conclusion

Dogs and cats can live together well, and in many homes with both, peaceful or at least low-conflict coexistence is possible. The relationship is usually more peaceful than close. Whether it works depends heavily on how safe the cat feels and how well everyday life is organized.

Three practical points are especially useful:

Give the cat security. Retreats, routes up high, and her own resources the dog can’t reach.

Introduce them gradually. Scent first, then sight with distance, then time together in one room with a leash.

Take predatory behavior seriously. Don’t let eyeing and chasing happen; prevent them from the start.

Key takeaways on dogs and cats

Usually peaceful, rarely close. In several surveys, most owners described the relationship as peaceful; a close bond was less common (Thomson et al., 2018; Menchetti et al., 2020).

Many sleep and play together. In 68.5 percent of homes, dog and cat slept together at least occasionally, and in 62.4 percent they played together (Menchetti et al., 2020).

Early introductions and cat-first households were associated with a more amicable relationship. These were observational associations, not guarantees (Feuerstein & Terkel, 2008).

The cat’s comfort was particularly informative. How comfortable the cat was had a stronger link to a peaceful relationship than how comfortable the dog was (Thomson et al., 2018).

Gradual introductions for puppies. Early and gradual introductions were associated with higher odds of only desirable behavior; overall, only 7.3 percent of puppies showed this (Kinsman et al., 2022).

Dogs respond strongly to cat sounds. Dogs with a history of injuring or killing cats or other small animals attended to cat sounds for especially long, but not to the doll or the smell (Hoffman et al., 2017).

Separate resources and elevated places. Professional guidelines recommend a safe retreat and separated resources for cats (Ellis et al., 2013).

References

• Bergman, L., & Gaskins, L. (2008). Expanding families: Preparing for and introducing dogs and cats to infants, children, and new pets. Veterinary Clinics of North America: Small Animal Practice, 38(5), 1043–1063. https://doi.org/10.1016/j.cvsm.2008.04.004
• Ellis, S. L. H., Rodan, I., Carney, H. C., Heath, S., Rochlitz, I., Shearburn, L. D., Sundahl, E., & Westropp, J. L. (2013). AAFP and ISFM feline environmental needs guidelines. Journal of Feline Medicine and Surgery, 15(3), 219–230. https://doi.org/10.1177/1098612X13477537
• Feuerstein, N., & Terkel, J. (2008). Interrelationships of dogs (Canis familiaris) and cats (Felis catus L.) living under the same roof. Applied Animal Behaviour Science, 113(1–3), 150–165. https://doi.org/10.1016/j.applanim.2007.10.010
• Hoffman, C. L., Workman, M. K., Roberts, N., & Handley, S. (2017). Dogs’ responses to visual, auditory, and olfactory cat-related cues. Applied Animal Behaviour Science, 188, 50–58. https://doi.org/10.1016/j.applanim.2016.12.016
• Kinsman, R. H., Owczarczak-Garstecka, S. C., Casey, R. A., Da Costa, R. E. P., Tasker, S., & Murray, J. K. (2022). Introducing a puppy to existing household cat(s): Mixed method analysis. Animals, 12(18), Article 2389. https://doi.org/10.3390/ani12182389
• Menchetti, L., Calipari, S., Mariti, C., Gazzano, A., & Diverio, S. (2020). Cats and dogs: Best friends or deadly enemies? What the owners of cats and dogs living in the same household think about their relationship with people and other pets. PLOS ONE, 15(8), Article e0237822. https://doi.org/10.1371/journal.pone.0237822
• Prior, M. R., & Mills, D. S. (2020). Cats vs. dogs: The efficacy of Feliway Friends^TM and Adaptil^TM products in multispecies homes. Frontiers in Veterinary Science, 7, Article 399. https://doi.org/10.3389/fvets.2020.00399
• Thomson, J. E., Hall, S. S., & Mills, D. S. (2018). Evaluation of the relationship between cats and dogs living in the same home. Journal of Veterinary Behavior, 27, 35–40. https://doi.org/10.1016/j.jveb.2018.06.043

Note: This guide does not replace individual advice. If your dog eyes, chases or has ever injured a cat, keep them consistently separated and get professional help.

Frequently asked questions about dogs and cats

Introductions, everyday life and chasing