Cats licking each other is usually a sign of affection, comfort, and social bonding rather than anything to worry about.

Quick Scoop: What’s Going On?

1. It’s Called “Allogrooming”

  • When one cat licks another, it has a name: allogrooming (mutual grooming between animals of the same species).
  • This is totally normal cat behavior and is very common in cats that share a home, especially if they get along well.

2. They’re Strengthening Their Bond

  • Licking is one of the main ways cats show affection and build a social bond with each other.
  • Grooming helps them “say”: “You’re part of my group, I trust you, and you’re family.”
  • Mother cats groom their kittens for bonding, warmth, and reassurance; adult cats often carry this behavior into their relationships later in life.

Think of it like two close friends fixing each other’s hair—practical, but also very affectionate.

3. Shared Scent = Shared “Team Jersey”

  • When cats lick each other, they spread their scent around, creating a shared group smell that marks them as part of the same social group.
  • This shared scent can reduce tension and help them feel safer and more unified in the same territory.

4. Helping With Hard-to-Reach Spots

  • Grooming each other lets them clean areas they can’t easily reach on their own, like the head, neck, and around the ears.
  • This is especially helpful for older, stiff, or chubby cats who might struggle with full-body cleaning.

5. Comfort, Calm, and Stress Relief

  • Licking can be soothing for both the cat doing the grooming and the one receiving it, lowering stress and promoting relaxation.
  • You might notice your cats groom each other after something mildly stressful (a loud noise, visitors, a new pet smell) as a way to calm down.

6. Sometimes It Turns Into Play… or a Spat

  • It’s very common for cats to lick each other and then suddenly start wrestling or even squabbling a bit.
  • Often what happens is:
    1. Grooming feels good.
    2. One cat gets overstimulated or excited.
    3. A lick turns into a gentle bite, then a playful swat, and suddenly it’s play-fighting time.
  • As long as both cats take turns, no one is getting hurt, and they calm down quickly afterward, this is usually normal social play.

7. When Licking Might Be a Red Flag

Most licking between cats is healthy, but watch for:

  • One cat repeatedly targeting the same sore spot (could signal pain, injury, or skin issues).
  • One cat doing all the grooming while the other seems tense, growls, hides, or avoids the other cat.
  • Grooming that always escalates into serious, loud fighting with hissing, yowling, or fur flying.
  • Excessive, obsessive grooming that creates bald patches or irritated skin (could be stress, allergies, or medical problems).

If you see any of these, it’s worth talking to your vet or a feline behavior specialist.

8. How You Can Support Their Bond

  • Let them groom each other without interrupting unless it clearly escalates into a real fight.
  • Provide cozy shared spaces (cat trees, beds, window perches) so there are plenty of spots where they can cuddle and groom if they want to.
  • Use multiple litter boxes, bowls, and resting spots so no one feels forced into conflict over resources, which keeps grooming interactions calmer and more positive.

Tiny Story Example

Imagine two housemates: one is the “neat freak” and one is more laid-back.
The neat freak straightens the other’s collar before they leave the house—part habit, part affection.
Your cats are doing something similar: a built-in, instinctive “tidy up” ritual that also says, “You’re mine, and I like you.”

TL;DR:
Cats lick each other mostly to bond, share scent, help with grooming, and relax together; it’s usually a sweet, normal behavior unless it becomes rough, one-sided, or obsessive.

Information gathered from public forums or data available on the internet and portrayed here.