My Cat's Tongue Is Hanging Out And She Is Drooling,What's Wrong?

Drooling in cats can be normal due to food smell, excitement, happiness, and hot and humid environment. Excessive drooling can be due to teeth and gum diseases, foreign body trapped in teeth, mouth ulcers, ingestion of medicines and flea sprays, ingestion of small lizards, infection of salivary gland, liver disorders, feline herpes and feline calcivirus.

Proper diagnosis requires thorough examination or oral cavity and some lab works. Sometimes, anesthesia is used for oral cavity examination. SO, take your cat to vet.