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Signs that cats don't get along include frequent hissing or growling, chasing, fighting, prolonged staring, blocking access to food or litter boxes, hiding, avoiding shared spaces, swatting, one-sided play, and changes in eating, sleeping, grooming, or litter-box habits. Cats do not need to cuddle or groom each other to have a healthy relationship, but repeated tension, fear, resource blocking, or physical aggression can indicate that they are not comfortable living together.

How Can You Tell If Your Cats Don't Get Along?

Not every pair of cats will become close friends.

Some cats happily sleep together, groom each other, and play. Others simply tolerate each other and prefer to maintain some distance. Peaceful coexistence can still be a healthy relationship.

The bigger concern is when one or both cats regularly appear tense, frightened, frustrated, or unable to move around the home normally because of the other cat.

Common signs include:

• Frequent hissing or growling

• Repeated chasing

• Fighting or ambushing

• Staring or stalking

• Blocking food, water, or litter boxes

• One cat constantly hiding

• Avoiding certain rooms

• Swatting when the other cat approaches

• One-sided chasing or play

• Tense body language

• Changes in appetite or grooming

• Urinating outside the litter box

• Refusing to share important resting areas

The most important thing is to look at the pattern, rather than one isolated interaction.

A single hiss does not mean your cats hate each other. Repeated behaviors that create fear or prevent one cat from accessing important resources are much more meaningful.

1. Your Cats Frequently Hiss at Each Other

Hissing is one of the clearest signs that a cat is uncomfortable.

A cat may hiss when another cat:

• Gets too close

• Enters its resting area

• Approaches its food

• Walks past unexpectedly

• Tries to play

• Enters its preferred room

• Stares at it

Occasional hissing can happen even between cats that generally get along.

The concern is frequent or escalating hissing, especially if it is accompanied by growling, swatting, chasing, or attempts to escape.

What to watch for

If one cat repeatedly hisses while the other continues approaching, the interaction may be creating significant stress.

Give the cats more space rather than forcing them to interact.

2. Your Cats Growl at Each Other

Growling usually communicates a stronger warning than a casual hiss.

A cat may growl when it feels:

• Threatened

• Frightened

• Cornered

• Territorial

• Frustrated

• Protective of food or another resource

If your cats regularly growl when they see each other, pay attention to what happens next.

A growl followed by the cats calmly walking away is different from a growl followed by stalking, chasing, or fighting.

3. One Cat Constantly Chases the Other

Chasing is not automatically a sign of conflict.

Cats can chase each other as part of normal play.

The important question is:

Do both cats willingly participate?

Healthy play often involves:

• Taking turns chasing

• Pausing

• Switching roles

• Returning voluntarily

• Relaxed body language

Conflict is more likely when:

• One cat always chases

• The other always runs away

• The fleeing cat hides afterward

• There is hissing or screaming

• The chasing cat corners the other

• The same cat is repeatedly targeted

A useful rule is:

If one cat repeatedly tries to escape and the other repeatedly pursues, don't assume it is play.

4. One Cat Blocks the Other Cat's Resources

This is an especially important sign because cats don't always need to physically fight to be in conflict.

One cat may control access to:

• Litter boxes

• Food bowls

• Water

• Cat beds

• Doorways

• Cat trees

• Favorite rooms

• Windows

• Human attention

For example, a cat may simply sit in front of the litter-box area and stare at another cat until the other cat leaves.

There may be no fighting at all.

Yet the blocked cat can still experience significant stress.

Resource blocking can look like:

This is one reason why a lack of fighting does not necessarily mean two cats are getting along.

5. One Cat Constantly Hides From the Other

Hiding is normal for cats from time to time.

However, persistent hiding can indicate that a cat doesn't feel comfortable in its environment.

Pay attention if one cat:

• Spends most of the day under the bed

• Avoids common areas

• Only comes out when the other cat is asleep

• Stops using favorite resting areas

• Runs away whenever the other cat enters

• Hides after being chased

A cat that has plenty of opportunities to interact but consistently chooses isolation may simply prefer solitude.

But if the hiding started after another cat arrived or increased as inter-cat tension increased, the relationship deserves closer attention.

6. Your Cats Stare at Each Other

Prolonged staring can be an important part of feline conflict.

Cats may use staring as a form of social pressure.

You may notice:

• One cat freezes when it sees the other

• They stare from opposite sides of a room

• One cat follows the other with its eyes

• One cat slowly approaches while staring

• A cat refuses to turn its back on the other

A relaxed glance is normal.

The concern is repeated intense staring combined with stiff posture, tail movement, hissing, growling, or avoidance.

7. One Cat Swats Whenever the Other Approaches

A single swat can simply mean:

"Please give me some space."

That doesn't necessarily indicate a serious relationship problem.

But repeated swatting whenever another cat comes near may indicate that the cat feels uncomfortable with that cat's presence.

Look at what happens afterward.

Mild boundary-setting

The cat swats once, the other cat moves away, and both return to normal behavior.

More serious conflict

The cat repeatedly swats, chases, hisses, or attacks the other cat.

The second situation requires more attention.

8. Your Cats Avoid Sharing the Same Room

Cats don't need to spend all day together.

In fact, many cats prefer having their own space.

However, consider the situation carefully if one cat cannot comfortably enter certain areas because the other cat is there.

For example:

• One cat stays upstairs because another controls the living room.

• One cat won't enter the kitchen when the other is eating.

• One cat waits outside a room until the other leaves.

• One cat only uses the house at night.

This is different from simply choosing separate sleeping spots.

Healthy coexistence often means:

"We don't need to interact, but we can comfortably share the home."

Conflict can look more like:

"I have to avoid this area because the other cat is there."

9. Your Cats Fight Repeatedly

Physical fighting is one of the most obvious signs of conflict.

A serious fight may involve:

• Screaming

• Hissing

• Growling

• Biting

• Scratching

• Fur flying

• Chasing

• Wrestling without role switching

• One cat trying to escape

• Cornering

Do not assume that cats should simply "work it out."

Repeated fights can increase fear and make future interactions more difficult.

If your cats are repeatedly fighting, separate them safely and work on identifying the underlying trigger.

Never put your hands between fighting cats.

Use distance and environmental barriers to separate them rather than physically grabbing an aroused cat.

10. One Cat Is Always the Victim of "Play"

This is an important distinction.

One cat may appear playful while the other cat clearly doesn't want to participate.

For example:

Cat A: chases, pounces, grabs, and bites.

Cat B: runs away, hides, hisses, and tries to escape.

That's not healthy mutual play.

Healthy play usually includes some degree of choice and participation from both cats.

If one cat repeatedly becomes the target, redirect the energetic cat toward appropriate toys and provide the other cat with safe escape areas.

11. Your Cats Avoid Eating Near Each Other

Cats can have different feeding preferences.

They don't necessarily need to eat side by side.

But if one cat refuses to eat because the other cat is nearby, that's worth investigating.

You may see:

• Walking away from the food bowl

• Waiting for the other cat to finish

• Eating extremely quickly

• Guarding food

• Hissing around food

• Refusing to enter the feeding area

Food competition can create significant tension.

Providing separate feeding locations can make a major difference.

12. One Cat Controls the Litter Boxes

Litter-box conflict can be subtle.

A cat may avoid using a litter box because another cat:

• Watches it

• Blocks the entrance

• Chases it afterward

• Sleeps near the box

• Guards the surrounding area

This can contribute to litter-box problems.

For multi-cat households, providing multiple litter boxes in separate, accessible locations can reduce competition and give cats more options.

If a cat suddenly stops using the litter box, don't automatically assume the other cat is the cause. Medical problems can also cause litter-box changes and should be considered.

13. Your Cat's Grooming Changes

Stress can sometimes affect normal grooming behavior.

A stressed cat may:

• Groom excessively

• Groom less

• Develop irritated or bald areas from overgrooming

• Stop grooming normally

• Spend more time hiding

Changes in grooming should not automatically be blamed on another cat.

Skin disease, parasites, pain, allergies, and other medical conditions can also cause grooming changes.

If the change is sudden or significant, veterinary evaluation is appropriate.

14. Your Cat Stops Using Favorite Places

Imagine your cat used to sleep on the sofa every afternoon.

After another cat arrives, it stops going there.

Or perhaps it previously enjoyed sitting on the window perch but now avoids it because another cat regularly occupies or guards the area.

This can indicate that the cat has lost access to an important part of its territory.

Providing multiple resting spots and vertical spaces can help cats create distance without constantly confronting each other.

15. Your Cat's Behavior Changes After Another Cat Arrives

A new cat can dramatically change the resident cat's environment.

Watch for:

• More hiding

• Less play

• Less interaction with people

• Changes in appetite

• Changes in sleeping patterns

• Increased vocalization

• Litter-box accidents

• Increased aggression

• Avoidance

• Excessive grooming

The same applies to the new cat.

A cat that appears quiet or withdrawn may not necessarily be "adjusting well."

It may simply be avoiding conflict.

Signs Your Cats May Be Uncomfortable but Not Fighting

Not every problem looks aggressive.

Some of the more subtle signs include:

Context matters.

A cat sleeping in another room is not automatically unhappy.

A cat only sleeping in another room because another cat controls the rest of the house is a different situation.

Cats Don't Have to Be Best Friends

This is an important point for multi-cat households.

Two cats can have a perfectly acceptable relationship without:

• Sleeping together

• Grooming each other

• Playing together

• Cuddling

• Sitting side by side

Some cats simply prefer peaceful coexistence.

For example:

Cat A sleeps on the sofa.
Cat B sleeps on the cat tree.
They occasionally walk past each other without tension.
Both eat, sleep, play, groom, and use the litter box normally.

That's not necessarily a problem.

The goal doesn't have to be making your cats become best friends.

The goal is creating a home where both cats feel safe and have access to what they need.

Signs Your Cats Actually Have a Healthy Relationship

It can help to compare negative signs with positive ones.

Healthy relationships may include:

• Voluntarily spending time together

• Sleeping near each other

• Mutual grooming

• Gentle play

• Taking turns during play

• Calmly sharing a room

• Walking past each other without tension

• Eating comfortably in the same general area

• Relaxed body language

• Choosing to approach each other

• Greeting each other

• Seeking each other after separation

Remember that peaceful coexistence is enough. Cats don't need to be physically affectionate to have a successful relationship.

What Should You Do If Your Cats Don't Get Along?

If you've identified repeated conflict, don't try to force the cats to become friends.

Instead:

1. Identify the trigger

Ask yourself:

• When does the conflict happen?

• Around food?

• Around litter boxes?

• Near windows?

• During play?

• At night?

• When one cat approaches the other?

• After one cat returns from outside or the veterinarian?

2. Increase resources

Provide multiple:

• Food stations

• Water bowls

• Litter boxes

• Beds

• Scratching areas

• Hiding places

• Cat trees

Ideally, resources should not all be concentrated in one location.

3. Create vertical space

Cat trees, shelves, and elevated resting areas can give cats more ways to move around each other.

4. Give each cat a safe retreat

Each cat should have somewhere it can relax without being followed or cornered.

5. Use structured play

Interactive play can help redirect hunting and play behavior away from the other cat.

6. Reward calm behavior

When cats are calmly near each other, positive reinforcement can help create better associations.

7. Separate serious conflicts

If fighting is repeated or dangerous, temporarily separate the cats and gradually rebuild their interactions.

Do not punish either cat.

Punishment can increase fear and may make the relationship worse.

When Should You Get Professional Help?

Consider veterinary or qualified feline behavior support if:

• Fighting happens frequently

• Injuries occur

• One cat is constantly hiding

• One cat cannot access food or litter boxes

• Appetite changes significantly

• A cat stops using the litter box

• Aggression suddenly appears in previously compatible cats

• One cat appears painful or unusually sensitive

• Conflict continues despite environmental changes

• One cat is being persistently bullied

A sudden behavior change can sometimes have a medical component, so it is especially important not to assume every aggression problem is purely behavioral.

Quick Checklist: Do Your Cats Get Along?

Ask these questions:

☐ Can both cats move freely around the home?

☐ Can both access food and water without being threatened?

☐ Can both use litter boxes comfortably?

☐ Does either cat constantly hide?

☐ Is one cat repeatedly chasing the other?

☐ Do they frequently hiss or growl?

☐ Does one cat block another from resources?

☐ Do they have relaxed body language around each other?

☐ Can they walk past each other without conflict?

☐ Does play involve some degree of turn-taking?

☐ Can both cats rest comfortably in shared areas?

☐ Has either cat developed sudden behavior changes?

If several answers point toward repeated fear, avoidance, or resource restriction, the cats may need changes to their environment and introduction strategy.

FAQ

Do cats hate each other if they hiss?

Not necessarily. A hiss usually communicates discomfort or a desire for distance. Occasional hissing can occur even between cats that otherwise coexist peacefully.

Is chasing always a sign that cats don't get along?

No. Cats may chase each other during play. Look for turn-taking, pauses, relaxed body language, and whether both cats willingly return to the interaction.

Can cats live together without being friends?

Yes. Peaceful coexistence is a perfectly reasonable goal. Cats don't need to cuddle, groom, or play together to have a healthy household relationship.

Why does one cat keep attacking the other?

Possible reasons include territorial conflict, resource competition, fear, redirected aggression, play aggression, stress, social tension, or pain. Identifying what happens immediately before the attacks can help reveal the trigger.

Should I separate cats that fight?

If the fighting is serious or repeated, separation may be necessary for safety. Avoid putting your hands between fighting cats. After the cats are calm, a gradual reintroduction may be needed.

How do I know if my cats are stressed by each other?

Possible signs include hiding, avoidance, resource blocking, changes in eating or grooming, litter-box changes, increased vocalization, and persistent tension when the cats are near each other.

Will cats eventually learn to like each other?

Not always. Some cats become close companions, while others learn to peacefully coexist. The goal should be safety and reduced stress rather than forcing friendship.

Final Takeaway

The clearest signs your cats don't get along are repeated conflict, fear, avoidance, resource blocking, persistent chasing, intense staring, hissing, growling, and physical aggression.

However, cats don't need to cuddle or groom each other to have a healthy relationship.

The most important question is:

Can both cats comfortably live in the same home without feeling threatened or being prevented from accessing essential resources?

If the answer is yes, they may simply have an independent relationship.

If one cat is constantly hiding, being chased, losing access to food or litter boxes, or showing physical or behavioral changes, it's time to address the underlying conflict rather than waiting for the cats to "work it out."

Recommended Cat Products for Multi-Cat Homes

• Multi-level cat trees for vertical territory

• Interactive wand toys for structured play

• Separate food and water stations

• Multiple litter boxes

• Covered cat beds and hideaways

• Scratching posts

• Puzzle feeders

• Interactive cat toys

• Calming and enrichment products

For a multi-cat household, the goal isn't to make every cat best friends. It's to create enough space, resources, and positive experiences that every cat can feel safe.