A small amount of drooling during kneading, intense pleasure, or sleep can be normal for some cats. Sudden or heavy drooling usually deserves investigation. Dental disease, including gingivitis, tooth resorption, and oral masses, is a frequent cause of foul-smelling saliva and pawing at the mouth.

Nausea from hairballs, dietary indiscretion, pancreatitis, kidney disease, or other internal illness can present as hypersalivation along with lip licking or reduced appetite. Motion sickness may drool only in the car.

Toxin exposure from plants, medications, insecticides, or unsafe human foods can cause drooling, vomiting, or neurologic signs. If you suspect poisoning, contact your veterinarian or a pet poison helpline immediately with the product name and amount.

Oral injuries, foreign material stuck across the palate, and electrical cord burns also produce salivation. Stress and overheating can contribute, but true heatstroke is an emergency with panting and collapse.

Brachycephalic and heavily jowled breeds may show more facial wetness, yet new drooling still warrants a dental and oral exam. Your veterinarian may recommend cleaning, imaging, blood work, or referral depending on findings. Early dental care improves comfort and appetite.