Get

In Your Inbox

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.

Why Is My Cat Drooling All of a Sudden? 13 Vet-Reviewed Reasons

Share

Orange cat drooling

Our feline friends can sometimes do odd things, so you may not always know what’s normal cat behavior and what isn’t. One feline behavior that you might be wondering about is drooling. If you see your cat drooling all of a sudden, should you be concerned, or is it fine and normal?

It depends on why your cat is drooling as to whether you should be concerned or consider a vet visit. Unfortunately, most of the time, drooling does indicate that something like an illness is going on. Here are 13 possible reasons that your cat is suddenly drooling, including the ones that have the most cause for concern!

divider cat faces oct 2024

The 13 Reasons Why Your Cat Is Suddenly Drooling

1. Tooth Decay or Other Dental Diseases

pet dentist cleans cat teeth in a vet clinic
Image Credit: Burdun Iliya, Shutterstock

Did you know that 50–90% of felines over the age of 4 years have some form of dental disease? That may be the cause of your cat’s drooling. Dental diseases that can result in drooling include tartar rubbing against the inside of the mouth, gingivitis, cavities, stomatitis, and feline oral resorptive lesions (or FORL). If dental disease is the cause of your pet’s drooling, though, you’ll also see other signs, such as:

  • Difficulty eating
  • Dropping food when trying to eat
  • Preferring soft food over hard food
  • Brown teeth
  • Red or bleeding gums
  • Bad breath

If you notice these other signs on top of the drooling, you’ll want to take your cat to the vet for dental treatment.


2. Foreign Material in the Mouth

If your cat is drooling and you can’t find any sign of dental issues, keep looking at their teeth because there might be a foreign object of some kind stuck in their mouth. Cats sometimes eat things they shouldn’t, such as string, and these things can get stuck between the teeth or in the back of the mouth and cause discomfort. If you do find something, don’t take it out on your own! Take your cat to the vet so they can remove the foreign material safely.


3. Consumption of Something Toxic

sick cat lying on blanket
Image credit: one photo, Shutterstock

Remember how we just said cats sometimes eat things they shouldn’t? That’s partially because of their curious natures and partially because one of the ways they explore the world is via their mouth. However, that means they run the risk of consuming something toxic or poisonous.

Take plants, for example. There are a host of plants that are toxic to our feline friends, so if your cat nibbles on some leaves or flowers that they shouldn’t, drooling could occur.

Other common items that cats get into are household cleaners. These products usually contain chemicals that can burn the mouth of your pet, which can cause drooling.


4. Anxiety

If your cat is highly anxious or stressed out, you may notice them drooling, along with exhibiting other signs of stress, such as flattened ears, growling, a stance that’s low to the ground, and aggression. This could be due to anxiety, such as a dreaded visit to the vet, or because a new pet or person has entered the home. If you think your cat’s drooling is stress-related, there are a few things you can do to aid them become less anxious.


5. Nausea

If your cat is dealing with a stomach ailment of any kind that involves nausea, it can result in drooling. The same goes for if the cat is vomiting a lot. If it’s an upset stomach or another digestive issue your pet is dealing with, you’ll see other signs, such as loss of appetite or diarrhea. This is yet another instance where a visit to the vet is in order!


6. Happiness

Have you ever noticed your cat drooling when they’re entirely at ease and relaxed? This will most likely occur when they’re kneading something soft and cuddly. Why is that? It’s believed that a cat drools while kneading because of the memory of anticipating food when they kneaded their mama cat for milk as a kitten. This instance of drooling may be a bit gross, particularly if it gets all over you or your soft, cuddly item, but it’s not cause for concern.


7. Tumors

yellow sad sick cat
Image Credit: Nikolay Bassov, Shutterstock

As with dental disease, drooling may occur if your feline has developed a tumor in their mouth. Most likely, a tumor will show up on the tongue or in the back of the throat, and while there’s a possibility that it can be surgically removed, that possibility depends on where it’s located.

If your pet is dealing with a tumor in the mouth, you’ll also likely see them having difficulty eating or swallowing. You may also notice blood in the mouth or your cat having issues closing their mouth fully. This is an instance where you and your cat want to take a trip to the vet to see what can be done.


8. Trauma to the Mouth

A broken tooth or fracture in the jaw can lead to drooling (and pain) in our kitty friends. The same goes for your cat eating something they shouldn’t have that’s damaged their mouth somehow. If your pet is drooling and you haven’t noticed any signs of illness or your cat doesn’t seem to be experiencing happy drooling, you’ll want to take a look to see if trauma to the mouth has occurred. Then, it’s time for a visit to the vet!


9. Illness

vet checking up cat's condition at vet clinic
Image Credit: didesign021, Shutterstock

We’ve already mentioned that digestive issues, dental disease, and cancer can cause drooling in our furry friends, but several other illnesses can do the same. A big one is upper respiratory infections, since they occasionally cause ulcers in the mouth, which can lead to drooling, sneezing, and eye and nasal discharge. Neurological diseases can also be responsible for drooling, along with trouble moving the tongue, difficulty eating, and balance issues.

Any health condition that can cause nausea, such as diabetes, kidney disease, or liver disease, can result in drool. So, if your cat is exhibiting other signs of illness while drooling, you’ll want to get them to a vet immediately to figure out the cause.


10. Teething

This one only applies to the kittens out there, but when kittens teethe, they may start drooling. Our tiny furry friends aren’t that different from human babies in that way. However, not all kittens will drool while teething, so whether yours does or doesn’t, it’s normal. That said, if your kitten is drooling excessively, it could be because something got caught in their teeth, so check the mouth just in case!


11. Insect Sting

cat stung by bee-pixabay2
Image Credit: tereza_vasnovska, Pixabay

This technically falls under the “trauma to the mouth” category, but if your pet eats an insect, it could be stung. This sting can cause inflammation, swelling, and pain, all of which can lead to drooling. That means if your pet is drooling for no other discernible reason, and you’re checking the mouth to see if there’s an issue, insect stings are another thing to check for. If you find one, go see your vet.


12. Bitter Taste

It might seem odd, but if a cat tastes something bitter, it can lead to extreme drooling. If you’ve ever given your pet medication via the mouth, maybe you’ve seen this occur. Felines have at least 12 genes related to bitterness, so eating something bitter is an unpleasant experience. In this instance of drooling, you can try getting your pet water, a treat, or food to help them get rid of the icky taste. That should help clear things up!


13. Heat Stroke

Sick Cat
Image Credit: George Hodan, Public Domain Pictures

If your cat spends time outdoors during the warmer months, you’ll want to keep an eye on them to make sure they don’t suffer heat stroke. As much as felines enjoy being warm and toasty, they are just as susceptible to heat stroke as we humans are. Signs that the heat is starting to get to your pet include drooling, panting, restlessness, excessive grooming, rapid breathing, vomiting, and lethargy. If your cat gets overheated, you’ll need to cool them down by wetting them with cool water and then take your pet to the vet.

divider cat faces oct 2024

Final Thoughts

Our feline friends drooling isn’t uncommon, but a lot of the time, it can be a cause for concern. The majority of the time that a cat drools, it’s due to either dental disease, illness, damage to the mouth, something foreign to the mouth, etc. There are occasions when your cat’s drooling shouldn’t worry you, though, such as drooling when they’re happily kneading away on your lap or after eating something bitter.

Most of the time, you’ll need to see if they are experiencing other signs that go along with the drooling, so you can give the vet an idea of where to start their exam when you take your pet in.

Related Read:


Featured Image Credit: Ling_Chen, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. Thank you for this information. I have an older " feral" cat that has made friends with me. Several months ago, she started making a grinding type sound with her teeth. Mostly on the right side. Now she is drooling and continues to make the grinding sound. It is difficult to find a vet that will see her because she is more feral than friendly. She is friendly with me only. She does not have this problem when she is sleeping. She continues to eat her dry cat food and her canned cat food. She drinks water, tends to sleep a lot more but she is an older cat. She loves to cuddle with me at night.

    1. You're welcome, Jennifer Clute. I understand that vet care can be challenging with some cats. While telehealth services like ours at www.pangovet.com might be helpful, your cat will need an in-person vet visit for diagnosis and treatment, and sedation will likely be necessary given what you've described.

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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

When a Cat Becomes a Water Fountain – Why Cats Vomit After Drinking

Seeing a cat drink water and then promptly bring it back up can be confusing. Sometimes the explanation is fairly simple, particularly if...

Chatting About Sleeping Positions, Loafing & Cats in Tubes | Chatty Cattys, Episode 33

In this episode of Catster’s Chatty Cattys podcast, Dr. Karyn and Nicole dive deep into the fascinating world of feline sleep behaviors. From...

The Bite Stuff: The Truth Behind a Cat’s Sudden Nip

A cat bite that seems to come out of nowhere is one of the more confusing things a cat owner deals with. Everything...

Your Cat’s Purr Proves They’re One of a Kind

There are few sounds more comforting to a cat parent than the familiar rumble of a purring cat. You probably know your own...

More related

How to Use Cat Litter Deodorizers: 5 Vet-Approved Tips & Guidelines

It can be hard to mask the smell of cat litter when you share your life with cats. The last thing you want...

How to Keep Cats Off Furniture Using Vinegar: 4 Vet Approved Steps

Cats are very persistent, and it can be challenging to keep them from doing what they want. Several commercial deterrents use dangerous chemicals...

9 Best Tartar Control Products for Cats in 2026 – Reviews & Top Picks

Every cat owner knows that their feline companion can spend hours upon hours grooming themselves, but one area they can’t clean is their...

How to Keep Cats Out of Your Yard & Garden: 9 Vet-Approved Methods

While all cats are adorable, fun, and frisky, they can also be destructive, and strays can sometimes carry diseases. If you have a...

Keep reading

Palliative Care for Cats: 6 Things You Should Know (Vet-Verified)

If you’ve recently received the unfortunate news that your beloved cat has developed a terminal or life-altering condition, your mind is undoubtedly full of more questions than you can count. Your vet may have mentioned the possibility of palliative care...

Vet touching a terminally-ill cat

Cat Brain Anatomy: Vet-Verified Facts & Common Disorders

Anyone who knows a cat is familiar with just how different they act from humans. Sometimes, they do things that leave us feeling puzzled or confused. However, humans share more similarities with cats than they think. In fact, when it...

close up longhaired brown tabby cat

Why Is My Cat Limping All of a Sudden? 7 Possible Reasons

Cats communicate differently than humans, so it’s helpful to observe and get to know your cat’s behavior. Understanding how your cat acts can help you catch any inconsistencies that point to underlying health concerns. If you notice that your cat’s...

calico cat standing up on hind legs

Are Irises Poisonous to Cats? Vet Approved Facts & Safety Tips

You likely know how it feels when you discover that your cat has eaten something and you have no idea whether it’s safe. Things that kitties seem quite fond of include plants and flowers, which are common in households. While...

Catster_Are Irises Poisonous to Cats

Kittens First Vet Visit: What to Expect & How to Prepare (Vet-Approved)

The first days and weeks after welcoming a new kitten into your home are usually full of excitement as you become acquainted with your new companion. Getting to know your pet’s quirks and personality traits and bonding with them is...

vet checking up tabby cat

Do Cats Like Snow? Vet-Verified Facts & Safety Tips

Cats are not known to be the biggest lovers of snow. Not all cats enjoy the cold, but some will since it mainly depends on the breed and individual preferences. Still, most house cats do not like the cold and...

A tuxedo cat in the snow

Kitten Development: First 12 Weeks (Vet-Reviewed Guide)

Bringing a new kitten home is a joyous and exciting occasion for all soon-to-be cat parents. This usually occurs when a kitten is between 8 and 10 weeks of age, depending on their size, health, vaccination protocol, and breed. However,...

american shorthair kitten

Can Cats Eat Cool Whip? Vet-Approved Nutritional Facts & Safety Tips

If your cat accidentally snacks on some cool whip, then they will likely be fine. Cool whip is not toxic for cats and will not cause problems in small amounts. Therefore, if your cat breaks into your pie, there is...

Can Cats Eat Cool Whip

Love Cats? So Do We! Join the Catster Community

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




Sign up for the Catster Email Newsletter

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