Cat Is Foaming at the Mouth

A cat suddenly starting to froth at the mouth can be a disturbing sight for a pet owner.

The first thing that automatically comes to mind is rabies, which might raise further questions and concerns if the cat has received a vaccination.

Although a qualified veterinarian must do a comprehensive medical examination of your cat to pinpoint the exact cause of the mouth-foaming, there are really a number of potential explanations.

What is Foaming at the Mouth?

There are a number of possible causes for your cat to be drooling, ranging from a routine bodily process with no cause for alarm to a possibly more serious health issue. While some drooling is common, you should look out for excessive drooling or mouth foaming.

Drooling can be caused by a variety of natural factors, such as excitement or a growing appetite. When fed catnip or drugs with a bitter taste, cats may also drool. However, cats don’t often drool, and mouth foaming might be a sign of a problem. The following are a few potential causes of mouth froth.

7 Reasons your Cat is Foaming at the Mouth

Your cat has been vomiting and foaming at the mouth due to rabies, nausea, anxiety, and dental issues. Your cat may begin to foam at the mouth if they have previously been poisoned or have ingested something harsh. A seizure and adverse reactions to anti-flea medications are further possibilities.

There are various causes and explanations, but the frightening ones that make your cat froth at the mouth are given here.


You must be aware of rabies as a pet owner since the moment you see your cat foaming at the mouth, your first concern is that your cherished animal has somehow contracted rabies.

Rabies is an improbable chance if your cat has had vaccinations, even though it is definitely possible, especially if your pet has been exposed to other animals.

Your cat would have been rabid for a while before developing mouth-foaming as this symptom doesn’t appear until late in the course of rabies.

You should keep an eye out for other rabies signs in your cat since they include aggressiveness, behavioral abnormalities, and drooling.

Unfortunately, except from booster vaccinations, there are no known rabies therapies, thus it is likely that your cat will need to be put to sleep.


Cats who feel sick often get exhausted. The good news is that you might not even need to say goodbye to your cat just yet if it has previously had rabies vaccination. Simple nausea may also be the cause of mouth foaming. That must be a big relief.

Your cat can be lethargic, have a low appetite, and perhaps produce mouth froth if they’re unwell. Your cat may experience nausea for a number of reasons, including pregnancy, lightheadedness, and medical conditions including gastritis and diabetes.

Expert Advice: Just like people, cats can become car sick and drool or foam at the mouth as a result. Other side effects of nausea include exhaustion and loss of appetite.


Anxiety is another potential cause of a cat’s mouth foaming. Cats are capable of experiencing emotional anguish. They may exhibit signs of anxiousness like as restless wandering around the house, fidgeting with objects, excessive combing of their furs, and mouth foaming.

A new pet in the house with whom they cannot socialize, having a traumatic event, separation anxiety, or relocating to a new location are some of the possible causes of their anxiety. There are medications on the market that might help your cat feel less anxious.

Expert Advice: In addition to the bitter-tasting prescribed cat medications, seek quick veterinarian care if your cat is foaming at the mouth. If your cat has consumed any medicine, flea treatment, or poison, bring the package so the doctor can look it over.

Dental Disease

Dental issues can lead animals to froth at the mouth in response to the infection, just like an abscessed tooth might form and cause agony.

If your cat develops gingivitis or breaks a tooth, they may not only feel discomfort, have bad breath, and lose appetite, but as the dental condition worsens, they may also start to froth at the mouth.

Many physicians do urge pet owners to brush their cat’s teeth, despite the fact that this may seem strange.

Yes, this could help your pet’s health, but if cleaning your cat’s teeth sounds excessive to you and you think your pet might have dental illness, you might want to make an appointment with a veterinarian.

Toxic Ingestion

A toxin intake may cause drooling and mouth foaming, which may be followed by nausea and vomiting. Many everyday items are hazardous, and certain pet products can also have adverse effects if used improperly or on a cat that is particularly sensitive to them.

Insecticides with pyrethrin bases, which are frequently used to treat flea and tick infestations in both dogs and cats, can be hazardous to cats if consumed and can result in severe drooling and foaming at the mouth.

Cats Is Been Poisoned

This is the most terrifying reason for your cat to be foaming at the mouth, except the danger of rabies.

Naturally, you should seek emergency veterinarian treatment if you suspect poisoning.

Your cat may begin to froth at the mouth if flea treatment has been mistakenly swallowed by your cat or administered directly to your cat’s coat.

Foaming can also happen in reaction to bitter-tasting things, such as meals and drugs.

There is inadequate evidence to lead you to believe that your unfriendly neighbor is to blame because there are a number of ways your cat may have unintentionally consumed poison, such eating a toxic frog or getting into household items.

Fortunately, quick medical attention can help your cat recover completely from poisoning.


Cats can have seizures. Because the signs are the same as those of a human seizure, you can usually tell if your cat is experiencing one unless it happens when you’re not there.

A cat will sag to the ground, briefly lose consciousness, tremor and shake erratically, and start to froth at the mouth. Make an appointment with your veterinarian if your cat is exhibiting symptoms of a seizure disorder.

Fortunately, there are medications that can treat cat seizure disorders and reduce seizure frequency. Convulsions or fits, which are other names for seizures, are brought on by an uncontrolled spike in brain electrical activity. Despite being far less prevalent than in dogs, they are among the most common neurological issues in cats.

The cerebrum, which is located towards the top of the skull and regulates sensory, neurological, and behavioral functions, is where seizures occur.

Viral Infections

Although developing rabies in a vaccinated cat is exceedingly uncommon, it is conceivable. Other viral illnesses, such as calicivirus, an upper respiratory infection comparable to the common cold, can also make cats excessively drool or froth at the mouth.

Flea treatments that are applied directly to the skin

If they are placed in a spot where your cat may lick them, the unpleasant taste might cause severe drooling and foaming. Apply topical flea treatments with caution, keeping your cat out of reach, on the back of your neck. Be advised that the ingredients pyrethrin and permethrin, which can be found in topical flea treatments for dogs, are very harmful to cats.

Expert Advice: Seek immediate medical help if you suspect your cat has ingested dog flea medication because this is a potentially dangerous disease.

What to do if your Cat is Foaming at the Mouth

Excessive drooling and mouth-foaming are typically accompanied by other signs and symptoms. If your cat exhibits aggressive behavior, a lack of appetite, vomiting, or tremors, you should seek emergency medical assistance. A little mild drooling should not be cause for alarm.

Drooling may have a variety of possible reasons, therefore it is advisable to see your veterinarian to determine the best course of action.

To identify the most likely reason of the excessive drooling, your veterinarian will do a thorough physical examination, inquire about your cat’s medical history, interaction with other animals, and exposure to potentially dangerous chemicals.

If dental disease is identified, your cat’s teeth will be cleaned by your veterinarian. In rare instances, a tooth must be extracted due to advanced dental disease.

It is best to bring a sample of the item you know or suspect may have poisoned your cat if you notice your cat foaming at the mouth after ingesting a toxin, since this necessitates rapid veterinarian attention.

If poisoning is suspected, your cat can be given charcoal to help the stomach absorb toxins or be made to induce vomiting. In addition, intravenous fluids may be used to assist your cat recover after ingesting a poison.

Your veterinarian may request blood testing and x-rays if a respiratory infection is suspected in order to assess the severity of the condition. In order to prevent the transmission of the illness, your doctor will also want to know if your cat recently interacted with other cats. During the infection, your cat will be kept away from other animals.

To prevent or treat a secondary bacterial infection, antibiotics may be administered together with restorative fluids. An upper respiratory viral infection may be treated with rest, a balanced diet, and oxygen treatment.

First Aid at Home—All You Need to Know

It can be terrifying to see your beloved cat frothing at the mouth, as was already described. However, you may rest if you can rule out any danger and are certain that your cat hasn’t been exposed to anything toxic. Your cat may be foaming because it is queasy or it may just be stressed out.

She may potentially be having an adverse reaction to a new drug you gave her. Cats frequently froth when given bitter-tasting medications. Wait it out in such situations. Once the medication has been absorbed by her body, she will start feeling better. It is best to speak with a veterinarian and go over your results with him if you are unsure.


Since nausea is a symptom rather than a disease, it’s critical to identify its cause and address it. Drugs that prevent nausea can make you feel better.

Bitter-tasting medications: offer the cat some food or drink right after taking the prescription, or think about using a compounding pharmacy to make it more palatable.

Poisoning – Gastric cleaning, which may involve making vomit or emptying the stomach, may be necessary if the poison formed during the past two hours. Activated charcoal has the ability to bind any poison still present in the gastrointestinal system.

Additionally, your cat will get supportive care such as intravenous fluids to alleviate dehydration and balance electrolytes.

Foaming at the mouth is a side effect of topical flea treatments that has to go gone right soon. Give the cat some water and a little piece of food as a treat to get rid of the taste.

Topical flea treatments should be applied to the nape of the neck, where the cat cannot access them. Cats are extremely toxic, thus they should never be treated with topical dog medications.

Ingestion of dog flea treatment – If you’ve recently treated your dog for fleas and believe your cat may have been harmed, call your veterinarian right once.

Seizures and tremors will be managed, and supportive care will be given, depending on the severity of the symptoms. Instead than trying to identify an antidote, the focus of treatment for pyrethrin/pyrethroid poisoning is to control symptoms.

Methocarbamol plus diazepam (Valium) can be used to treat tremors and seizures. Gas anesthesia may be required if the seizures are persistent (seizures that do not respond to seizure medication). The body is treated with fluids to stay hydrated.

Seizures – The veterinarian must determine the underlying cause of the seizures and treat it, as well as provide prescription medication to assist control them.

Each situation’s course of treatment for dental problems is decided individually. Some cats only require a thorough cleaning and scaling. It could be necessary to remove a severely damaged tooth under general anesthesia.

Rabies – Cats with rabies must be put to sleep because there is no effective cure. Veterinarians are required by law to notify the appropriate authorities of any animal that has rabies.

Prevention of Foaming at the Mouth

By being a good cat owner and keeping your cat in a safe environment, you may avoid many health-related foaming at the mouth problems. Avoid intentionally frightening your cat or allowing others to do so. To avoid concerns connected to fear and anxiety, provide a secure, caring environment where your cat feels at home.

Common dental disorders may develop as your cat ages. Cleaning your pet’s teeth on a yearly or semi-annual basis will help maintain their mouths healthy. You can also assist your cat maintain a healthy mouth between sanitary appointments by brushing their teeth and gums on a regular basis with the correct equipment and a little bit of patience.

Never use toothpaste or other dental care products intended for human consumption since they may be poisonous. Increased water content in natural cat food will also aid in reducing plaque and germs in your cat’s mouth.

Follow the guidelines and only use anti-flea and anti-tick medications designed exclusively for cats. Higher dosages in dog-specific formulas might be hazardous to your cat.

The majority of topical treatments are applied on the neck behind the head where your cat cannot swallow them by brushing, but if you have more more one cat or even a dog that needs treatment, be cautious of indiscriminate grooming.

Frequently Asked Questions

How Long Does It Take to Notice Rabies in a Cat?

It’s quite difficult to say. The majority of the time, a cat will begin to have rabies symptoms between three and eight weeks after exposure, but in some circumstances, they may not manifest for as long as a year. Mouth foaming is a sign of rabies in its advanced stages.

What Household Items Are Poisonous to Cats?

Many common home chemicals, such as bleach and laundry soap, are poisonous to cats and can cause poisoning and frothing at the mouth if consumed. It’s crucial to keep kids and dogs away from these typical household items.

Why Is My Cat Foaming Out the Mouth After Being Administered Medication?

Cats sometimes begin frothing out their mouths after taking medicine because of the flavor or because they are having trouble swallowing. It may not always indicate an allergic response.


Although it may not be rabies if your cat is foaming at the mouth, you should still get immediate veterinarian attention.

Mouth-foaming can be caused by a variety of circumstances, but in the majority of instances, there are treatments available, and the outlook is favorable. The good news is that there’s a strong possibility your cat will feel better shortly.