Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Cat Behavior

Why Does My Cat Lick My Armpits: 5 Vet-Reviewed Possible Reasons

By Lorre Luther · Reviewed & fact-checked by Dr. Paola CuevasVet Approved
Dr. Paola Cuevas
Reviewed & Fact-Checked byDr. Paola CuevasMVZ (Veterinarian)
Dr. Paola Cuevas is the Senior In-House Veterinarian at Pangolia, the parent company of Catster. She has over 18 years of experience as a veterinarian and animal behaviorist. Paola's focus is on preventive medicine and animal welfare. Paola has a large range of skills in from diagnostic imaging to nutrition and clinical pathology. Paola enjoys sharing her extensive knowledge of animal training with our Catster readers and is always happy to answer reader questions as our in-house veterinarian.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Read about our vets
Share
cat licking its nose

Cats are wonderful, but most people who’ve ever loved one of these perfect creatures had at least one moment when they wondered: what on earth is my cat up to and what could have possibly possessed the animal to do that?  If your cat has a penchant for licking your armpits, well, it’s fair to say you might have some questions.

Rest assured, there’s nothing wrong with your kitty, and there are several plausible reasons why your cat might be interested in snuggling up to your pits. Read on to discover a few possible reasons why your cat might not be able to get enough armpit time!

divider 2 cats

The 5 Possible Reasons Why Cats Lick Armpits

1. Protein

Cats are carnivores, and they need protein to survive. As strange as it may sound, armpit sweat actually contains substances that are good for cats, including, you guessed it, mammalian proteins! Kitties have sensitive noses and are attracted to foods that feature protein. Your kitty can smell the good stuff in your sweat, and they’re attracted to it. As a general rule, there’s nothing wrong with letting your four-footed companion lick your underarms.

Just make sure you’re not wearing an antiperspirant containing aluminum, as the metal can be toxic to cats. (Don’t panic if your cat grabs a few bites of aluminum foil in their enthusiasm to steal a bit of enticing human food leftovers. If we’re only talking a few small bites, your cat should poop the foil out and will most likely be just fine.

cat licking human arm
Image Credit: sophiecat, Shutterstock

2. Smell

Cats are super smellers. While they outperform humans when it comes to the ability to sniff things out, they’re not quite in the same league as dogs, which makes sense since they have fewer receptors that allow them to perceive smells than your average canine companion. Just like you get the warm fuzzies when you smell a t-shirt your loved one slept in, the same thing is true for cats when it comes to their favorite people.

Ever wonder why cats love sleeping on top of your dirty laundry? It’s because your scent permeates whatever you’ve worn, and under the right circumstances, this can be comforting to your cat. Armpits are full of scent-producing apocrine glands that produce pheromones.  It’s no wonder that your cat finds your underarms interesting and can’t resist giving yours a lick now and then.


3. Grooming ✂️

Cats enjoy grooming each other. It’s an instinctive behavior seen even in big cats like lions and tigers. It builds bonds and indicates deep affection. Mother cats groom their kittens until they’re around 4 weeks old to encourage their babies to eat and provide comfort. After kitties reach about 1 month old, they begin returning the favor by grooming their mom and siblings.

Cats essentially treat their human companions as if we’re big, kind of funny-looking, overgrown cats. When a cat licks you, it means that they care deeply about you and perceive you as part of their family.

Image Credit by: Goran Horvat, Pixabay

4. Weaning

Some cats that were weaned too early have a tendency to suck on things. Favorite targets often include blankets on their ’owner’s lap, clothing their human family wears and even skin..  Necks, inner elbows and armpits are particularly popular, and armpits provide an extra bit of comfort through those pheromones. Interestingly enough, female cats have scent glands around their nipples, so it’s not surprising that your kittie instinctively connects your gland-filled armpits with comfort and sucking.

Just because your kitty enjoys licking your armpits doesn’t necessarily mean they were weaned too early. Many cats simply find sucking and licking to be deeply comforting. And as long as your cat isn’t ingesting anything problematic such as antiperspirant, the behavior isn’t really something you need to worry about.


5. Salt

Cats are drawn to the salt in sweat. Many cats will sneak a lick if you come home on a hot day covered in perspiration. Interestingly, salt is one of the few tastes that cats can detect. Felines don’t have taste receptors that pick up on sweet tastes, so when your kitty is after that piece of cake you’re eating, it’s not because they’re after the sweet taste of icing.

While your cat may like the taste of salt, too much of the mineral can be bad for your four-legged companion’s health. While there’s probably not enough sodium in your armpit sweat to harm your baby’s health, it’s best not to let your cat get into your table salt. Cats should never be given salt intentionally, even if they appear to enjoy the taste of salty human foods like chips.

Image Credit by: 12222786, Pixabay
divider 2 cats

Conclusion

Kitties are loving creatures that form deep bonds with their favorite humans, and armpit licking, while seemingly strange, is often part of maintaining a human-cat connection. As long as your cat isn’t licking your armpits while you’re wearing aluminum-based antiperspirant, you probably have nothing to worry about when it comes to your cat’s health. If the licking really bothers you, the best way to get cats to stop doing something is to ignore it and reward the behavior you want to see.

Sources

Feaaatured Photo Credit: Pexels, Pixabay

The Catster Newsletter

Expert cat care, straight to your inbox

News, insights, and useful advice, delivered to you.

No spam — unsubscribe anytime.

By signing up, you agree to our Terms & Conditions and Privacy & Cookies Policy.

Click a star to rate. You can leave written feedback afterwards. (We read all feedback.)

Lorre Luther
Authored by

Lorre Luther

Leave a Reply

You're very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let's have a positive and constructive conversation.

Why Do Cats Lick You? 6 Vet-Approved Possible Reasons

Why Do Cats Lick You? 6 Vet-Approved Possible Reasons

Cats are notoriously aloof little critters, so it’s hard not to feel like the chosen one when yours licks you. But what's the real reason cats lick their human…

Chantelle Fowler
By Chantelle Fowler ·
Why Does My Cat Lick Me in the Middle of the Night? 5 Vet-Reviewed Reasons

Why Does My Cat Lick Me in the Middle of the Night? 5 Vet-Reviewed Reasons

If you are a cat person, you have probably received several licks from your cat. But why would your cat be licking you in the middle of the night? Are they try…

Christian Adams
By Christian Adams ·
Do Cats Lick Themselves to Get Your Scent Off? 3 Surprising Theories

Do Cats Lick Themselves to Get Your Scent Off? 3 Surprising Theories

Have you ever noticed your cat licking themself after being around you or right after you pet them? That’s because cats lick themselves as a way to keep clean…

Christian Adams
By Christian Adams ·
Why Do Cats Groom Humans? 8 Vet Reviewed Reasons

Why Do Cats Groom Humans? 8 Vet Reviewed Reasons

You can be sitting on the couch and scrolling on your phone when, all of a sudden, you start to feel an unusual feeling on the top of your head or arm. Your ca…

Adam Mann
By Adam Mann ·

Why Does My Cat Lick My Ear? 3 Vet-Reviewed Possibilities

The sandpaper texture of a cat's tongue unexpectedly plunging into your ear can be quite an uncomfortable shock. If your cat has this strange behavior, you may…

Sophie Jeffares
By Sophie Jeffares ·
Why Does My Cat Lick My Ear? 3 Vet-Reviewed Possibilities

Why Do Some Cats Like Earwax? Vet-Verified Reasons for this Behavior

If you’ve noticed that your cats seem to have an affinity for ears and earwax, you’re not alone. Many cat owners first notice it when watching their cats groom…

Christian Adams
By Christian Adams ·
Why Do Some Cats Like Earwax? Vet-Verified Reasons for this Behavior

Why Does My Cat Lick My Hair? 7 Vet-Verified Reasons for This Behavior

You’re sitting in front of the television, unwinding after a busy day, when all of a sudden, your cat starts licking your hair. What is going on here? Does you…

Christian Adams
By Christian Adams ·
Why Does My Cat Lick My Hair? 7 Vet-Verified Reasons for This Behavior

Lap Grooming Explained: 4 Vet-Verified Reasons Cats Do It

Cats are full of surprises. Just when you think you’ve figured them out, they do something that makes you tilt your head in confusion. Like grooming themselves…

Dan Seymour
By Dan Seymour ·
Lap Grooming Explained: 4 Vet-Verified Reasons Cats Do It

Why Does My Cat Lick My Hand & Fingers So Much? 7 Vet-Reviewed Reasons

A dog licking your hand is normal, and it's how they show affection. However, a cat is a different story. Felines aren't widely known for their licking behavio…

Kristin Hitchcock
By Kristin Hitchcock ·
Why Does My Cat Lick My Hand & Fingers So Much? 7 Vet-Reviewed Reasons

Why Do Cats Like Salt? 3 Vet-Reviewed Reasons

There’s nothing quite as tasty as a handful of salty nuts or a bowl of potato chips. But unfortunately, your cat might agree and try to snatch chips right out…

Chantelle Fowler
By Chantelle Fowler ·
Why Do Cats Like Salt? 3 Vet-Reviewed Reasons

Why Is My Cat Sniffing My Face? 6 Vet-Reviewed Reasons

Your cat loves you—that much is certain. But have you ever wondered why your cat insists on sniffing your face? It's not just because they love the way you sme…

Christian Adams
By Christian Adams ·
Why Is My Cat Sniffing My Face? 6 Vet-Reviewed Reasons

Why Does My Cat Clean Herself on Me? 4 Vet-Verified Reasons & When to Worry

Cats have quite a few strange behaviors. Even if you have been living with cats forever, you may still be surprised by their behavior every once in a while. Fo…

Christian Adams
By Christian Adams ·
Why Does My Cat Clean Herself on Me? 4 Vet-Verified Reasons & When to Worry

Love Cats? So Do We! Join the Catster Community

Stay informed with expert cat care insights delivered straight to your inbox! Discover professional guidance on feline behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Catster site on a phone