Cats lick other cats’ butts to clean, bond, and share scent. This is normal cat behavior. It helps keep the area clean. It also helps cats feel close and safe with each other. Cats use scent to know who belongs in their group. Licking helps spread that scent. Mother cats lick their kittens this way to keep them clean and healthy. Adult cats often keep this habit. In homes with more than one cat, this shows trust and comfort. It is usually not a problem. It only becomes a concern if the licking is constant, rough, or causes redness. From my grooming experience, I see this often in friendly cat pairs. Most of the time, it shows strong bonding and calm social behavior.
I’ll also show you safe ways to redirect or reduce the behavior based on what worked in my own home. Stay with me, and let’s make this strange cat habit feel simple, normal, and easy to understand.
What This Behavior Really Means in Cat Language
It’s Normal Social Grooming (Most Common Reason)
Cats lick each other’s butts to groom hard-to-reach spots and keep each other clean, and this is the most common meaning of the behavior. When I first saw my cats do this, I felt a mix of shock and curiosity, but I later learned it was normal grooming. Cats help each other because they trust each other and share a bond that goes deeper than what we see. It feels odd to us, but to them, it’s simple teamwork. I think of it like friends fixing each other’s hair before a photo—strange from the outside, sweet on the inside. This is one of the main reason cat lick other cats butt, and it’s often not a problem at all.
It Helps Cats Share and Blend Their Scents
Cats lick each other’s butts to mix scents and build a shared group smell, which helps them feel safe and connected. I’ve watched my cats do this right after they nap together or trade beds, almost like they’re saying, “You’re part of my group.” In cat language, scent is everything. It builds peace, lowers stress, and helps each cat know who belongs in the home. This scent mix is kind of like a family perfume—odd, but meaningful. If you’ve seen this happen after small fights or moments of stress, it may be their way of rebuilding unity.
A Sign of Trust, Bonding, and Social Hierarchy
Butt-licking can show trust and show who leads in the group, because cats use grooming to show respect and build bonds. In my own home, the older cat always starts the grooming session, and the younger one accepts it with no fuss. It reminds me of a tiny ritual that says, “I trust you, and I know my place with you.” Cats use grooming to keep peace and reduce tension. When I see it, I know the home feels calm and safe for them. So even if it looks strange, it often means your cats feel close and secure.
Kitten Behavior That Carries Into Adulthood
Some adult cats lick each other’s butts because they learned it as kittens and kept the habit for comfort. Mother cats lick their babies everywhere to clean them, help them go to the bathroom, and keep them safe. Some cats grow up and keep that memory as a comfort act. I’ve seen this with one of my rescues who still grooms like a little kitten. It’s almost nostalgic for them—a soft link back to early care. So if you see your cats do this, it may be a simple leftover from their kitten days, not a sign of a problem.
Hidden Reason Cat Licks Other Cats’ Butt
Checking for Health Problems
Sometimes, cats lick each other’s butts because one might not feel well. I noticed one of my cats licking the other’s rear a lot. There was redness and a little swelling. A quick visit to the vet showed minor anal gland irritation. It was a relief. This behavior had a reason. If you see repeated licking, scooting, or any discomfort, it’s best to check with a vet. Acting early can prevent bigger problems.
Curiosity or Learned Behavior Between Cats
Cats are very curious. Sometimes, they copy each other, even odd habits like butt-licking. My younger cat learned this by watching the older one. It reminded me of siblings copying each other. Cats learn from watching. This behavior can be playful, curious, or a way to show who leads. It might look strange to us, but it is normal for cats to learn from one another.
Over-Attention or Close Bonding in Multi-Cat Homes
Butt-licking can increase when cats want extra attention or comfort from each other. During a move, my cats groomed each other more than usual. It seemed to calm them and keep them close. In homes with multiple cats, changes like new pets, different routines, or loud noises can make them stick together more. Watching their actions helps understand if it is simple bonding. Offering quiet spaces and attention reduced this behavior in my cats.
When Butt-Licking Becomes a Problem
Sometimes, licking between cats goes beyond normal grooming. Most of the time, it is harmless. But sometimes, it shows there is a problem. Here is how to know when to check.
Signs It’s More Than Normal Grooming
If licking is constant or rough, it may not be normal. I saw one cat licking the same spot on another for minutes. Persistent licking, pawing, or fussing can show discomfort. Watching early can prevent bigger problems.
Red Flags: Odor, Swelling, Discharge, Scooting
Bad smells, swelling, discharge, or scooting are warning signs. Once, I noticed a slight smell and small swelling on my cat. Scooting across the floor was a clear hint. These signs mean a closer look is needed.
Possible Health Issues: Parasites, Diarrhea, Anal Gland Trouble
Excessive licking may point to parasites, diarrhea, or anal gland issues. Cats can’t tell us when they feel pain. Licking is their way to show it. A vet can find the cause and fix it quickly.
My Personal Experience With Over-Grooming Between My Cats
I have seen this at home. One cat had a small irritation, and the licking lasted too long. A vet check showed minor anal gland trouble. After treatment, both cats groomed normally. Checking early helps cats stay healthy and happy.
Safe Ways to Redirect or Reduce the Behavior
Sometimes, cats lick each other’s butts too much. This can be not very pleasant. One way to help is through play. Toys, laser pointers, and puzzle feeders keep cats busy. Even a few minutes a day can help. Giving each cat its own resting and feeding area is useful, too. My cats have separate beds and food spots, and this keeps them calmer. Keeping cats clean also helps. Wiping them gently with pet-friendly wipes reduces odors and lowers grooming. Adding shelves, scratching posts, and hiding spots gives them choices and keeps them active. Finally, gentle redirects work well. Toss a toy or give a small treat. These methods guide cats naturally. They reduce excessive licking while keeping the bond strong.
Preventive Care to Keep Both Cats Healthy
Preventive care keeps cats healthy and happy. I learned early that brushing them helps a lot. Brushing removes loose fur and keeps coats smooth. Wiping gently with pet-safe wipes is helpful too, especially near their rear. Good food is important. Cats need balanced meals to keep their stomachs working well. I feed my cats the same type of food each day. Wet food or fiber can help if the stools are soft. Clean litter boxes matter too. I scoop twice a day and change the litter once a week. Cats feel safe in a clean space and groom less when their bathroom is tidy.
Simple steps like brushing, good food, and a clean litter box prevent problems. They help cats stay healthy and avoid over-licking or irritation.
FAQs
Is it normal for my cat to lick another cat’s butt?
Yes. Cats do this to groom each other. It shows trust and keeps their scents shared.
When should I stop this behavior?
Stop if the licking is too much or rough. Redness or sores mean a vet check.
Is it safe for cats to lick each other’s private areas?
Yes, if it is gentle. Watch for smell, swelling, or pain.
Does this behavior mean something is wrong?
Not usually. It is normal bonding. See a vet if licking is constant or causes harm.
How do I keep my cats from over-grooming each other?
Give toys, space, and clean litter boxes. Play or treats can redirect their attention.
Final Thoughts
Cats do strange things sometimes, like licking each other’s butts. It looks odd, but most of the time, it is normal. It shows trust, comfort, and bonding. I have watched my cats do this many times.
As the founder of Monsieur Groomer, I see cat owners ask this question often. My advice: stay calm and watch. If the licking is gentle, it is fine. If it is constant or rough, check with a vet.
Keep cats healthy with clean litter boxes, good food, and toys. Give them space and quiet spots to rest. Each cat is different, and patience helps a lot. Observe, care, and your cats will stay happy and safe.