It’s a sweet sight: two cats curled up together, gently licking each other’s heads and necks. This behavior is called allogrooming. It’s one of the clearest signs that cats are bonded. But why do cats groom each other, and why does it sometimes end with a swat or a scuffle? Here’s what’s going on.
Allogrooming means grooming another animal. Cats spend a lot of time grooming themselves, but cats who are friends also groom each other. They usually focus on areas that are hard to reach alone, like:
Allogrooming is mostly a social behavior. Cats that groom each other are usually part of the same friendly group. It helps strengthen their relationship.
Cats recognize each other partly by smell. Grooming mixes scents and creates a shared “family” smell. This helps cats feel familiar and safe with each other.
A friend can clean the top of the head and behind the ears, where a cat can’t easily reach.
Grooming can help reduce tension and keep the peace between cats.
Sometimes a grooming session ends with a hiss, swat or play fight. This can happen because:
Short, mild scuffles that end quickly are usually normal. Watch for signs of real conflict, like flattened ears, hissing, growling, chasing and one cat hiding or avoiding the other.
Some research suggests that cats who groom others may be slightly more confident or higher in the group, but this isn’t always the case. For most cats, it’s simply a sign of friendship.
Yes. If your cat licks your hair or hands, they may be treating you like a member of their family group. It’s usually a sign of trust and affection.
Watch for:
Our article on my cat is hiding and not eating explains when changes in behavior need a vet. For homes with several pets, see why multi-pet households need an online vet.
Our article on cat peeing outside the litter box explains how stress between cats can affect litter box habits.
Yes. Any cats that are bonded may groom each other.
Some infections and parasites can spread through close contact, so keep all cats on preventive care.
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