The first time I noticed my cat, Luna, drooling, I had no idea what to think. She was nestled in my lap, purring contentedly, when I suddenly felt a damp spot on my jeans. At first, I laughed it off, assuming it was just one of her quirky behaviors. But then I started wondering—why does my cat drool? Was she simply expressing happiness, or could this be a sign of something more concerning?

As a devoted pet parent, I knew I had to find answers. I scoured the internet, spoke with my vet, and learned that while some drooling is completely normal, excessive or unexpected drooling can indicate an underlying issue. If you’ve ever asked yourself, “Why does my cat drool?” you’re not alone. Let’s dive into the possible reasons behind this feline mystery.

Why Does My Cat Drool? 7 Possible Reasons

Unlike dogs, cats aren’t known for drooling, so if you notice an increase in saliva, it’s essential to understand why. Here are seven possible reasons for excessive drooling, ranging from harmless to potentially serious conditions.

1. Pure Bliss and Relaxation

Some cats drool when they are purring, kneading, or completely relaxed. This is a natural response to deep contentment, often stemming from kittenhood, when nursing would trigger drooling. If your cat only drools during these moments of happiness, there’s no cause for concern. It’s simply their way of expressing joy. Some cats even associate drooling with their bond with their human, making it a sign of trust and affection. While it may not be the most glamorous aspect of pet ownership, consider it a compliment from your furry friend!

2. Dental Issues and Mouth Pain

One of the most common medical reasons behind drooling is dental disease. Gingivitis, tooth decay, oral infections, and abscesses can cause pain and inflammation, leading to excessive saliva production. If your cat has bad breath, avoids eating, or paws at their mouth, a veterinary checkup is crucial to rule out dental problems. Cats are experts at hiding pain, so even if they seem fine, subtle changes in behavior—like favoring one side while eating—could be a sign that something is wrong.

3. Nausea or Motion Sickness

Just like humans, cats can experience nausea, which can trigger drooling. If your cat tends to drool during car rides or after eating something unusual, nausea may be the culprit. Common causes include gastrointestinal issues, kidney disease, and toxic ingestion. If drooling is accompanied by vomiting or lethargy, seek veterinary care. Even stress-related nausea can lead to drooling, especially in situations where your cat feels anxious, such as vet visits or unfamiliar environments.

4. Foreign Objects or Injury

Cats are curious creatures, and sometimes they get things stuck in their mouths—like bits of food, string, or small toy parts. If your cat suddenly starts drooling excessively, refuses to eat, or paws at their mouth, check for any foreign objects. Mouth injuries, such as cuts or burns from chewing something harmful, can also lead to increased saliva production. If your cat enjoys chewing on household items, ensure they don’t have access to cords, plants, or small objects that could pose a choking hazard.

5. Respiratory Infections

Upper respiratory infections (URIs) can cause excessive drooling, especially if your cat develops mouth ulcers or struggles to swallow. Additional symptoms may include sneezing, watery eyes, and nasal discharge. If your cat exhibits these signs, a vet visit is necessary to diagnose and treat the infection. Viral infections, such as feline herpesvirus, can cause recurring bouts of mouth ulcers, making drooling a persistent issue in some cats.

6. Toxin or Poison Exposure

Certain household items, including plants, chemicals, and medications, can be toxic to cats. Ingesting something harmful can cause excessive drooling as their body reacts to the toxin. Common culprits include lilies, antifreeze, and certain cleaning products. If you suspect poisoning, contact your vet or an emergency pet clinic immediately. Even some foods that are harmless to humans, like onions or chocolate, can be toxic to cats and cause excessive salivation as a warning sign.

7. Oral Tumors or Serious Health Issues

While less common, oral tumors and neurological disorders can also cause persistent drooling. Tumors in the mouth or throat can increase saliva production and make swallowing difficult. If your cat’s drooling is accompanied by weight loss, appetite changes, or behavioral shifts, a thorough veterinary examination is essential. Some neurological conditions, such as nerve damage or stroke, can also interfere with a cat’s ability to control saliva, making drooling a symptom of a larger issue.

When Should You Be Concerned About Your Cat’s Drooling?

Now that we’ve explored the possible causes, how do you know when drooling is a problem? Here are some signs that indicate a need for veterinary attention:

• Sudden onset of excessive drooling
• Foul-smelling breath (a sign of dental disease or infection)
• Loss of appetite or difficulty eating
• Pawing at the mouth or showing signs of mouth pain
• Drooling accompanied by vomiting or lethargy
• Blood in the saliva

If your cat exhibits any of these symptoms, don’t hesitate to schedule a vet visit.

How to Help a Drooling Cat

Depending on the underlying cause, there are different ways to help your feline friend:

• For happy drooling: No need to worry—just keep a soft cloth nearby to wipe away excess saliva.
• For dental issues: Regular vet checkups and professional cleanings can prevent serious oral diseases. You can also introduce feline-friendly dental chews or brushing as part of their routine.
• For nausea: If your cat experiences motion sickness, limit car rides or ask your vet about anti-nausea medications. Providing a comfortable, stress-free environment can also help reduce anxiety-induced nausea.
• For foreign objects: If you suspect something is stuck in their mouth, check carefully or visit the vet. Avoid pulling out an object yourself if it appears lodged deep in their throat.
• For infections or toxins: Seek immediate medical attention if poisoning or infection is suspected. Keep toxic substances out of reach, and be aware of common household hazards.
• For general care: Ensuring your cat stays hydrated and well-fed with a balanced diet can help maintain their overall health, reducing the risk of many drooling-related issues. Encourage play and stimulation to keep their stress levels low.

So, why does my cat drool? The answer depends on the situation. If it happens only when your cat is happy and relaxed, there’s no need to worry. However, if the drooling is sudden, excessive, or accompanied by other concerning symptoms, it’s time to investigate further.

As cat owners, it’s our responsibility to stay observant and ensure our furry companions are happy and healthy. If you’re ever uncertain about your cat’s drooling, a quick call to your vet can provide reassurance.

Have you ever noticed your cat drooling unexpectedly? Share your experiences in the comments—I’d love to hear about your feline friends and their quirks!