Why Do Cats Groom Each Other? Allogrooming, Bonding and Rank
Few sights are more heartwarming than two cats grooming each other, tongues busy, eyes half closed. This behavior, called allogrooming, tells you much about cat relationships. It also has some subtle messages that are worth reading.
What is allogrooming?
Allogrooming is grooming between two animals. Cats do it with relatives, close companions and sometimes people. It usually involves licking the head, neck and face, areas that a cat cannot reach alone. One cat grooms while the other relaxes. Cats may take turns, or one may groom more.
Why cats do it
Bonding. Cats groom those they trust. Mothers groom kittens from birth, and bonded adults continue the habit. It strengthens social ties.
Scent sharing. Grooming spreads the scent of the group across all members, creating a shared colony smell. This helps cats to recognize friends and strangers. See why do cats sniff each other's rear.
Comfort and relaxation. Being groomed feels soothing and lowers stress.
Hygiene. Cats help to remove dirt and parasites from places that they cannot reach.
Social status. Some studies suggest that higher-ranking cats receive more grooming, though cat social structure is flexible.
Reducing tension. Grooming may help to calm situations where tension exists.
Cats grooming people
If your cat licks you, it may be treating you as a member of the family. See why does my cat lick me. It may be affection or a way to share scent.
Signs of a healthy bond
- Relaxed bodies and half-closed eyes.
- Purring.
- Taking turns.
- Sleeping together.
- Rubbing against each other.
- Sharing perches.
See how to tell if your cat is happy.
When grooming signals tension
- Grooming becomes biting, or one cat pins another down.
- One cat tries to get away.
- Flattened ears, tail lashing or growling. See cat tail language and cat ear positions.
- Excessive grooming of one cat, which may be bullying.
- Cat hair loss, from over-grooming by another cat.
If you see this, separate the cats and watch. See aggression between cats and how to separate fighting cats.
Cats that do not groom each other
Not all cats groom each other. Some pairs tolerate each other, but remain distant. This is fine, as long as there is no conflict. Do not force friendships. See setting up a multi-cat home.
Encouraging bonds
- Introduce new cats slowly. See how to introduce a new cat to your cat.
- Provide plenty of resources, so that there is no competition.
- Feed cats near each other, at a comfortable distance, to build positive associations.
- Play together with wand toys.
- Give them shared beds, but also separate ones.
- Keep routines steady.
Kittens and littermates
Kittens groom each other from a young age. Littermates often stay bonded. See should you get two kittens.
Grooming and health
If a cat stops grooming itself or others, it may be unwell. Senior cats and overweight cats groom less. See senior cat care guide. Excessive self-grooming can signal stress or skin disease. See why do cats overgroom and cat skin allergies.
Hairballs
Cats that groom each other may swallow more hair. See hairballs in cats.
Allogrooming between cats and other animals
Cats may groom other pets in the home, such as dogs, rabbits or even a child's soft toy. This usually reflects affection, but supervise, since some animals may not welcome it. Make sure other animals are healthy and parasite-free. If you see a cat grooming a pet to the point of hair loss, separate them and ask your vet for advice, since this can be compulsive or a sign of tension.
What it looks like in practice
Watch two cats that groom each other, and you will notice the rhythm. One may start by sniffing the other's head, then lick in long strokes around the ears and neck. The recipient often leans in, closes its eyes and purrs. After a few minutes, roles may reverse. A short break and a stretch usually follow. This calm pattern is a good sign. If a cat tires of the grooming, it will move away, and the other usually lets it go.
Helping cats that do not groom each other
If your cats keep their distance, do not worry. Some cats prefer to be near each other without contact. You can encourage gentle bonding by feeding them in the same room at a comfortable distance, playing with wand toys together and sharing a warm bed. Never force them to touch. If tension appears, give each cat a private retreat and separate resources, and ask your vet for help if conflicts continue.
When to see a vet
See a vet if you see hair loss, skin sores or a change in grooming. Use the US vet directory to find a clinic.
Frequently asked questions
Do cats groom each other out of love?
Often, as part of bonding and social comfort.
Why does one cat groom another then bite it?
Overstimulation or tension, so watch body language.
Why does my cat lick me?
It may treat you as part of the family group.
Is overgrooming a problem?
Excessive grooming can signal stress or skin disease.
Sources and further reading
Behavior problems often have medical or emotional roots. These specialist bodies explain how professionals assess them.
- Ohio State Indoor Pet InitiativeResearch-based enrichment ideas for indoor cats and dogs.
- International Cat CareVeterinary-reviewed advice on feline health, behavior and welfare.
- ASPCA cat careEveryday care, behavior and safety basics for cats.
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