Cat Foaming at the Mouth: What You Need to Know

Video cat foaming at mouth dying

If you’ve ever seen your cat foaming at the mouth, it can be quite alarming. There are several reasons why this might happen, ranging from harmless to potentially serious. In this article, we’ll explore the various causes of cat foaming at the mouth and what you should do if you encounter this situation with your furry friend.

Common Causes of Foaming at the Mouth


Just like humans, cats can experience car sickness, which can lead to drooling and foaming at the mouth due to nausea. Other signs of nausea in cats include a loss of appetite and lethargy. Some common causes of nausea in cats include kidney disease, pancreatitis, certain medications, and motility disorders.

Bitter tasting substances

Bitter-tasting substances or medications can also cause foaming at the mouth in cats. Oral and eye medications often have a bitter taste, leading to this reaction. If your cat is prescribed a medication with a bitter taste, there’s usually no cause for concern. However, it’s always a good idea to inform your veterinarian about the issue. Offering your cat a small meal or treat after taking the medication can help eliminate the bitter taste.


Cats are vulnerable to various toxins, including pyrethrins, poisonous toads, plants, and snail bait. If your cat has ingested a toxin, watch for additional symptoms such as confusion, vomiting, diarrhea, and lethargy. Seek immediate veterinary attention if you suspect your cat has consumed a toxin.

See also  How Long Should a Cat's Eyes Stay Dilated After Anesthesia?

Spot-on flea treatments

If applied in an area that your cat can lick, spot-on flea treatments can cause excessive drooling and foaming. It’s essential to apply these products to the back of the neck, where your cat can’t reach. Cats are also highly sensitive to ingredients used in dog flea and tick treatments, so if you suspect your cat has been exposed to them, seek immediate veterinary treatment.


Seizures can cause foaming at the mouth in cats. They are one of the most common neurological disorders in cats and can range from mild muscle twitches to severe limb paddling. If your cat experiences seizures, it’s important to determine the underlying cause and administer appropriate medications.

Dental problems

Dental issues such as broken teeth, gum disease, and stomatitis can also lead to foaming at the mouth in cats. Look out for symptoms like bad breath, loss of appetite, and signs of pain around the mouth.


While rare, foaming at the mouth can be a symptom of rabies in cats. Thankfully, most cats in the US are vaccinated against rabies.


Anxiety can cause cats to hyper-salivate, resulting in foaming at the mouth. This is often seen during car rides or visits to the veterinarian. If your cat suffers from anxiety, speak to your veterinarian about strategies to help.

When to Seek Veterinary Attention

If your cat is foaming at the mouth after taking prescribed medication, it’s best to contact your veterinarian for advice. Foaming at the mouth in this case is usually due to the bitter taste of the medication and should pass quickly. However, if your cat is foaming at the mouth without an apparent cause, it’s safest to consult your vet.

See also  Anal Glands in Cats: What You Need to Know

Diagnosis and Treatment

To determine the cause of foaming at the mouth in cats, a thorough physical examination and medical history are necessary. Your veterinarian may also conduct blood and urine tests and additional diagnostics if needed. Treatment will depend on the underlying cause but may include anti-nausea medications, changes in medication administration, decontamination for toxin ingestion, and addressing dental issues.

Cat Foaming at the Mouth with Blood

If you notice blood in your cat’s saliva along with foaming at the mouth, it’s important to take them to the veterinarian as soon as possible. This could indicate a dental issue or mouth injury that requires immediate attention.

Frequently Asked Questions:

What household items are poisonous to cats?

Unfortunately, many common household items are toxic to cats, including certain plants, cleaners, medications, onions, garlic, grapes, raisins, tobacco products, pesticides, herbicides, coffee, caffeine, alcohol, and mothballs.

How long does it take to notice rabies in cats?

If a cat is bitten by a rabid animal, the incubation period before showing clinical signs can range from 2 weeks to 2 months, but it can also be delayed for years.

What first aid options can I try at home?

If your cat is foaming at the mouth and you’re certain they haven’t ingested toxins or been exposed to a rabid animal, you can offer them water and food if they’re hungry. However, it’s essential to monitor your cat closely and contact your veterinarian if the issue persists or if other signs of illness occur.

For more information about cat health and grooming, visit Katten TrimSalon.

Remember, if you’re ever unsure or concerned about your cat’s health, it’s always best to consult with a veterinarian for expert advice and guidance.