Top 20 Reasons Why Your Cat is Foaming at the Mouth?


Cats’ mouth-foaming can be worrying and cause pet owners to get concerned. Determine the underlying cause as there are many potential causes for this behaviour, from benign to serious. Here are 20 causes of your cat’s possible mouth-foaming.

Dental Problems

Dental issues in cats, such as gum disease, abscesses, and tooth decay, can cause oral pain and foaming at the mouth. Your cat may have a dental issue if you notice it is having difficulty eating, drooling excessively, or pawing at its mouth.


Cats who consume harmful chemicals like antifreeze, certain plants, or insecticides may experience mouth foaming. You must seek veterinarian care right away if you think your cat may have consumed something harmful.

respiratory illnesses

Feline herpesvirus and feline calicivirus are two respiratory illnesses that cats can get and which can result in mouth foaming. Sneezing, runny nose, and eye discharge are other symptoms.

Rabies Rabies is a virus that cats can contract by being bitten by an animal that has the disease. Along with hostility and odd behaviour, foaming at the mouth is one of the defining signs of rabies.


Foaming at the mouth, twitching, convulsions, and loss of consciousness are all symptoms of seizures in cats. If your cat is having seizures, you should get medical advice from a veterinarian as there are many underlying medical disorders that can lead to them.

Kidney Disease

Due to the accumulation of toxins in the body, kidney illness in cats can result in mouth foaming. Cats with kidney disease often experience weight loss, decreased appetite, and increased thirst.

Cats who are experiencing heatstroke may also exhibit panting, drowsiness, and a rapid heartbeat in addition to foaming at the mouth. It’s critical to provide your cat a cool spot to rest and seek medical attention right away if it exhibits signs of heatstroke.

Immune Reactions

Food, medications, and bug stings are just a few of the things that can cause allergic reactions in cats and cause them to foam at the mouth. Itching, swelling, and hives are other indications that a cat is experiencing an allergic response.

Objects in the Mouth

Cats occasionally get sticks or grass lodged in their mouths, which can result in foaming and discomfort. It’s critical to speak with a veterinarian if you think your cat may have something strange lodged in its mouth.

Irritation and Vomiting

Ingesting something that disrupts their digestive tract or one of a number of underlying medical issues can cause nausea and vomiting in cats. In cats, foaming at the mouth may be a sign of nausea and vomiting.


Cats who have epilepsy, a neurological condition, may experience convulsions and mouth foaming. Muscle twitching, altered behavior, and loss of consciousness are some more epilepsy signs in cats.

Anxiety and stress

For cats, stress and anxiety can result in excessive grooming, hiding, and loss of appetite, in addition to making them foam at the mouth. It’s critical to determine the source of your cat’s stress and anxiety before seeking veterinarian care.


Cats who have fleas, ticks, or mites may experience mouth foaming. This is so that excessive licking and foaming are prevented. The reason for this is that parasites can irritate the skin and create itching. Cats with parasite infestations may also experience hair loss, scabs, and red, irritated skin.

Virulent Upper Respiratory Infections

Cats that have upper respiratory illnesses, such as feline rhino tracheitis, may have mouth foaming. Cats who have upper respiratory infections may also sneeze, have runny noses, or have ocular discharge.

decay in the teeth

Cats who have dental abscesses may also experience swelling, pain, and trouble feeding, in addition to foaming at the mouth. It’s critical to get veterinarian care if your cat has a tooth abscess in order to stop the illness from spreading.

Mouth Sores

Mouth Sores Mouth sores, including tumours or ulcers, can make cats’ mouths foam. Cats with mouth sores may also have trouble eating, slobber, or paw at their mouths.

Cardiac Problems

Cats who foam at the lips may have heart problems such heart disease or heart failure. Coughing, panting, and breathing difficulties are further signs of cardiac problems in cats.

a liver condition

Cats with liver disease may experience vomiting, decreased appetite, yellowing of the eyes and skin, and foaming at the mouth. It’s critical to get veterinarian care if your cat has liver disease in order to address the issue.


Cats with hyperthyroidism, or an overactive thyroid, may also experience weight loss, an increase in appetite, and an increase in thirst. It’s critical to get veterinarian care if your cat has hyperthyroidism in order to address the disease.

Oral Tumors

In addition to making cats have trouble eating, slobber, and have poor breath, oral tumours can also cause them to foam at the mouth. It’s critical to seek veterinary care if your cat has an oral tumour in order to get it removed and stop the cancer from spreading.


Cats’ mouth foaming can be brought on by a number of underlying medical issues, ranging from minor to serious. A veterinarian should be consulted as soon as you see your cat foaming at the mouth in order to identify the underlying reason and administer the necessary care. Your cat’s quality of life can be enhanced and consequences can be avoided with early diagnosis and treatment of medical disorders.

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