Last Updated: 4 months ago

Why do cats groom each other when they are in a group?

Is it about love and affection, or something entirely different?

More importantly, is licking another cat normal behavior, or should we call in the kitty psychologist?

Read on for all of these answers and more!

4 Reasons Why Do Cats Groom Each Other

The term animal behaviorists use to describe this peculiar behavior between cats is “cat colony allogrooming”, or simply allogrooming.

It is a behavior that is probably unique to the cat family since it can also be observed in larger animals of their species, such as lions and tigers.

While many pet parents may seem to think of this adorable behavior as a simple display of affection among cats, the reasons behind allogrooming are a bit more complex.

It’s a form of expression which has yet to be fully understood by scientists. While it may look cute, unknown to many, some reasons may even be quite surprising.

#1 Maternal Bonding

mommy cat grooming her kitten

One reason why cats like to lick and groom each other probably starts from the time of a kitten’s birth. 

When a kitten is born, the mother cat automatically displays this behavior toward her newborn. It is most likely an instinct that the mother cat will have towards her kittens.

It is probably even one of the many ways in which the mother will nurture her children. Cats are basically clean animals. It can probably be said that grooming is part of a cat’s basic instinct.

It is because of this attitude that the mother cat makes sure that she keeps her kittens constantly groomed and clean from birth. Yes, cats hate being dirty!

The tongue of cats has some pretty good antiseptic properties, which make them very effective when it comes to cleaning themselves.

It is also for this very reason that cats don’t need to bathe as often as other house pets, such as dogs. The instinct to lick and groom her young also has a protective purpose.

Keeping her kittens clean means that she is able to hide their scent. Doing so makes it easy for the mother to keep her young out of a prospective predator’s nose and sight.

Kittens, on the other hand, will rely on their mothers for help in practically everything in order to survive. This includes the need to groom and keep themselves clean.

They will allow their mothers to do what has to be done in order to live. This usually lasts for a month after which they are prepared to do the task of cleaning and grooming by themselves as their instincts dictate.

This cleaning habit between a mother cat and her kitten is a practice most probably carried over to adulthood,  thus influencing the behavior of cats towards each other.

#2 Form of Social Bonding

cat grooming another cat

The most obvious reason behind this feline behavior is pretty much what everyone guesses.

It’s a way of confirming more than just a simple, shallow bond between cats. Rather, allogrooming is proof of a very deep bond between cats within a given colony.

Cats within their established social group do groom each other as a way of affirming that they are part of a particular cat colony, since it is not always that a cat gets automatically accepted and approved of within a given group. Yes, rejection does happen!

This is probably a way of establishing cohesion in colonies that cannot be easily broken. Indeed, it’s pretty much like your regular high school drama.

In fact, individual cats within a colony seem to seek approval by allowing themselves to be nudged and licked as part of allogrooming.

After all, rejection can be pretty hurtful, and that holds true even for cats.

#3 A badge to show social hierarchy

cat licking another cat on the face but why do cats groom each other?

Interaction among cats within a group or colony follows a sense of rank or colony hierarchy among themselves.

In the simplest of terms, the allogroomer is the leader, the probable high school jock or prom queen.

When a cat licks another cat, it’s his way of telling the rest of the group that no one should be messing with him. This has been especially observed in domestic cats as they start to form groups.

In this particular colony, it was noticed in a British study that the cat with the more aggressive behavior seemed to initiate allogrooming in other cats.

The more submissive cat allows the aggressive one to groom him at the head-neck area, which actually is quite difficult to reach.

Besides allogrooming, it has also been seen that the allogroomer usually has a more dignified posture compared to the one being allogroomed.

While the self-proclaimed head of the colony tends to sit with a more upright posture, the meeker one tends to hunch over while allowing himself to be licked and groomed.

Make no mistake, though! It may appear to be an adorable behavior within a cat colony; it may look like these cats are being friendly while trying to help each other.

Researchers seem to believe that allogrooming may actually be a way for the aggressive cat to redirect any pent-up aggression that may ensue in a fight.

In other words, this behavior may be a way for colony cats to maintain peace and order within their racks.

#4 They need help

grey cat grooming a black cat

Even cats need their buddies to help them out when they are in need. Cats are known to be fastidious animals.

They really make it a point to keep themselves as clean as possible. There are areas of their body that can be hard to reach, specifically the head to the neck area.

Think of it as asking your buddy to scratch your back. Cats will go near another cat with whom they are comfortable to ask for much-needed help.

Why Do Cats Lick and Groom Each Other and Then Bite?

Mutual grooming between cats may be their way of showing acceptance of each other. At times, it can be a sign of affection.

It can also be a diversion meant to stop one cat from showing antagonistic behavior towards another. However, there may be times when one cat has had enough.

Even too much social interaction can be tiring at times and when one cat has had enough, this may result in a display of inter-cat aggression, also known as a catfight.

This shouldn’t be mistaken, however, for aggressive play fights which cats engage in as part of their bonding activities with each other.

Cats can be pretty rowdy when they play and this kind of rough play is oftentimes mistaken as fighting.



In a nutshell, yes. Cats groom each other as part of their social behavior toward each other. Cats generally groom each other to show that they are accepted within a group. However, there may be instances when grooming is used as a sign to show dominance within a group.

It may also be a sign of pent-up aggression in one cat that prevents him from developing more aggressive behavior towards another one within the same group. In this case, it stops infighting among cats within a given colony.


For adult cats, licking each other’s private areas is their way of helping each other out to keep themselves clean.

For kittens though, the reason may be a bit different. Besides the fact that this is the mother kitten’s way of grooming her kitties, she also licks her kitten’s private parts in order to stimulate them to eliminate their waste.

Kitties do not normally get “the urge” to eliminate waste when they’re newly born. Licking them in their private area is the mother cat’s way of encouraging them to do their private stuff.


Cats, when domesticated, can be social animals. Just like humans, they too tend to assess others to see if they can get along within a given colony through this behavior.

Licking and grooming each other, otherwise termed as allogrooming, is their manner of expressing themselves within their clique. To a mother and her kittens, it can be a sign of nurture and care.

Perhaps it is a learned behavior from birth that cats continuously practice as they age and mature.

Just like a mother and her kittens, licking and grooming each other may be their way of expressing acceptance which, in turn, will form stronger bonds within their colony.

Again, like a mother to her kittens, it is also their way of expressing authority within a given group. Yes, mom is the queen and the boss!

For whatever reasons, the habit of licking and grooming is a feline’s way of communicating. In the grand scheme of things, it is probably nature’s way of keeping order within their species as well.

What do you think? Why do cats groom each other? Do you often see it with your cats? Let us know in the comments below!


two kittens licking and grooming each other
Andreea Juganaru
Andreea Juganaru

Andreea is a very passionate content creator and her purpose is to provide you with the most interesting articles, while constantly discovering new facts. She’s been freelance writing for the past five years and has created numerous articles and educational materials while managing her own business.