Why Do Cats Drool When They Are Happy?

cat petted drooling

Cats exhibit all sorts of strange behaviors when they are happy, including drooling.

There are multiple explanations for this that all cat owners should know about.

Some of the reasons for your cat’s drooling are downright fascinating to say the least.

It is a Sign of Affection

Many cats drool when they see their owners because they are very happy. This is basically your cat’s way of saying that it loves you. Even dogs sometimes drool when they get very excited. It is a perfectly normal and really sweet behavior among these animals. You should take it as a compliment, because it means that your cat really cares for you.

Cats may drool when they are feeling incredibly relaxed and at ease. This is precisely why you might notice your pet do this when you are petting them in that one spot they love so much. It also means that they trust you completely.

It honestly takes a lot for a cat to trust a person enough to where they are this out of it. This means that you have established a very strong bond with them.

Other Reasons for Drooling

There is a chance that your cat is drooling not because they are happy, but for some other reason. Because there are lots of things that can cause this to occur, you will need to learn about as many of them as possible.

1. Dental Disease

It is possible that your cat is drooling because they are having problems with their teeth and/or gums. Dental disease is fairly common in these animals, and it can quickly become very serious. 

This is why it is so important for you to check out the inside of your cat’s mouth on a regular basis. If you notice any swelling or redness of the gums, you should take your pet to the vet right away.

Sometimes malocclusion can cause drooling in cats. This is basically a misalignment of the teeth, which is somewhat common.

cat drool

2. Your Cat Ingested Poison

Drooling can also occur in animals that have ingested poison. If you ever see your cat eating rat poison or something else that is toxic to them, you need to take them into the vet right away. The longer you wait to do this, the more their life will be in danger.

3. Nausea

One of the most common health issues that cause drooling in cats is nausea. This frequently happens just before a cat vomits, and it is something that occurs with humans too. If you see your cat drooling quite a bit, this is definitely a possibility. It is even more likely if they have also exhibited a lack of appetite. It means that something is seriously wrong with their stomach.

Your cat could be experiencing nausea for many different reasons. It could have eaten something that didn’t agree with it. There is also a chance that they ate some insect that is poisonous or venomous. While nausea in these animals usually passes relatively fast, you should still keep an eye out for signs of serious illness.

4. They are Stressed

Another possible explanation for your cat’s drooling is that they are stressed. If you have just moved into a new house of apartment, this can cause your pet a lot of anxiety for the first few days. Some cats are more adaptable than others, but a lot of these animals have trouble making such a transition.

There is usually a specific cause of stress when it comes to cats, though some of them do have a general anxiety disorder. Depending on the cause of the stress, medication might be needed. It is also possible that your cat is stressed out over a loud noise, such as from a thunderstorm or fireworks. This is more common associated with dogs, but some cats have this issue as well.

5. Foreign Object

If your cat keeps drooling and doesn’t stop after a while, you’ll want to check its mouth to ensure that nothing is stuck in it. A foreign object in their mouth could cause them to drool quite a bit. This can also lead to choking if they swallow the object.

6. Problems Swallowing

Cats that are having difficulty swallowing may also start drooling, though this is not always the case. There are plenty of reasons that your cat could be struggling to swallow, such as a foreign object lodged in its throat. It could also be due to a severe respiratory infection.

If you ever notice that your cat is having problems swallow, you need to get it looked at by your vet immediately. Cats that experience this particular issue may stop eating and drinking altogether, which can be dangerous all by itself.

cat drool bench

7. Pleasant Dreams

Many researchers have speculated that cats sometimes drool when they are sleeping because they are imagining something very pleasant. It is also possible that they are dreaming about eating a delicious fish or something else. While we really don’t know for sure what cats dream about, their physical reactions can be quite interesting.


  • Many cats drool when they see their owners because they are very excited and love them so much.
  • Drooling is something that cats often do when they are feeling very relaxed.
  • Your cat’s drooling could also be due to dental disease. Certain problems with their teeth and gums can cause them to drool.
  • Stress is another common reason for cats to drool. While their stress is usually tied to a specific event or cause, some of these animals have general issues with anxiety.
  • Lots of cats that become nauseous for whatever reason end up drooling, usually just before they vomit.
  • Problems with swallowing can lead to excessive drooling. You will need to take your cat to the vet right away if you notice this.
  • If your cat has ingested something poisonous, it might start drooling. You absolutely need to get them medical attention immediately if this is the case.
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