Why Is My Cat Licking My Other Cat’s Bum?


If you’re a cat parent, you may have noticed some peculiar behaviors between your feline friends.

One behavior that might catch your attention is when one cat starts licking the bum of another cat.

While it may seem strange or even gross to us humans, this behavior is actually quite common among cats.

In this blog post, we will explore why cats engage in this behavior and what it might mean for their health and social dynamics.

Understanding Cat Grooming Behavior

Cats are known for their meticulous grooming habits.

They spend a significant amount of time each day grooming themselves, and sometimes, they extend this behavior to other cats in their social group.

Grooming is a natural instinct for cats and serves several purposes, including:

  1. Cleaning: Cats use their tongues to clean their fur, removing dirt, debris, and loose hair.
  2. Bonding: Grooming is a social behavior that helps cats establish and strengthen social bonds within their group.
  3. Scent Marking: Cats have scent glands on their tongues, and when they groom each other, they leave their scent behind, marking the other cat as part of their social group.

Mutual Grooming Among Cats

Mutual grooming, also known as allogrooming, is a common behavior among cats that live together in a social group.

It is a way for cats to reinforce their social bonds and maintain a harmonious group dynamic.

When one cat licks the bum of another cat, it is often a sign of trust and acceptance within the group.

The Anal Gland Connection

One reason why a cat may lick another cat’s bum is to help with anal gland expression.

Cats have anal glands located on either side of their anus, and these glands produce a scent that is unique to each cat.

When a cat licks another cat’s bum, they may be helping to stimulate the anal glands and release their scent.

This behavior is particularly common among cats that have a close bond and spend a lot of time together.

Social Hierarchy and Dominance

In multi-cat households, the act of one cat licking another cat’s bum can also be related to social hierarchy and dominance.

Cats have a natural instinct to establish a pecking order within their group, and grooming can be a way for cats to assert their dominance or submission.

The cat doing the licking may be showing deference to the other cat or asserting its position as the dominant member of the group.

When to Be Concerned

While mutual grooming is generally a normal and healthy behavior among cats, there are some instances where it may be cause for concern.

If you notice excessive licking or irritation around the bum area, it could be a sign of an underlying health issue.

Here are a few possible reasons why your cat may be excessively licking another cat’s bum:

  1. Parasites: Fleas, ticks, or other parasites can cause itching and discomfort, leading to excessive licking.
  2. Anal Gland Problems: If a cat’s anal glands become impacted or infected, it can cause discomfort and lead to excessive licking.
  3. Skin Irritation or Allergies: Cats can develop skin allergies or irritations that may cause them to lick excessively.
  4. Urinary Tract Infection: In some cases, excessive licking around the bum area may be a sign of a urinary tract infection.

If you notice any signs of discomfort, irritation, or other abnormal behavior, it is best to consult with your veterinarian to rule out any underlying health issues.


Mutual grooming, including licking each other’s bums, is a common behavior among cats.

It serves as a way for cats to bond, establish social hierarchy, and maintain a harmonious group dynamic.

While it may seem strange to us humans, it is a natural and instinctual behavior for cats.

However, if you notice any signs of discomfort or excessive licking, it is always best to consult with your veterinarian to ensure your cats’ health and well-being.

Frequently Asked Questions

Q: Is it normal for cats to lick each other’s bums?

A: Yes, mutual grooming, including licking each other’s bums, is a normal behavior among cats. It helps them bond and maintain social harmony within their group.

Q: Why does my cat lick my other cat’s bum?

A: Cats lick each other’s bums as a way to establish trust, strengthen social bonds, and maintain their social hierarchy within their group.

Q: Should I be concerned if my cat is excessively licking another cat’s bum?

A: While mutual grooming is generally normal, excessive licking or signs of discomfort may indicate an underlying health issue.

It is best to consult with your veterinarian if you have any concerns.

Q: Can excessive licking of another cat’s bum be a sign of parasites?

A: Yes, excessive licking around the bum area can be a sign of fleas, ticks, or other parasites.

It is important to check your cats for any signs of infestation and consult with your veterinarian if necessary.

Q: How can I prevent excessive licking between my cats?

A: If you notice excessive licking or irritation, it is important to address any underlying health issues first.

Regular grooming, providing a clean and stress-free environment, and ensuring each cat has their own space can help prevent excessive licking between cats.

Q: Is it necessary to intervene if my cats are licking each other’s bums?

A: In most cases, it is not necessary to intervene unless there are signs of discomfort or excessive licking.

Cats have their own ways of maintaining their hygiene and social bonds, and as long as they are healthy and happy, it is best to let them engage in their natural behaviors.

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