Cats vomit mostly due to hairballs. Kitty swallows excess hair while cleaning, occasionally with food or bile.
Cats cannot tolerate many indoor and outdoor plants. Check and remove plants if your cat vomits green. Some poisonous plants make cats puke.
Cats eat rubber bands, dental floss, cat toy string, paper clips, and doll shoes. A cat's stomach foreign body may cause vomiting or blockage.
Many human foods poison cats. Garlic, onions, seasoned meats, chocolate, and sugar can cause vomiting, cardiac arrhythmia, convulsions, and death in cats.
Cats do it too—often. This may explain your cat's vomiting, gagging, and lethargy. For difficult-to-diagnose gastrointestinal tract inflammation, take your cat to the vet immediately.
Hairballs, strange substances, and more can cause intestinal obstructions, preventing kitten from eating. Visit the vet if your cat vomits.
Hyperthyroidism, cancer, kidney disease, parasites, diabetes, and other diseases can cause cats to vomit. Early detection allows prescription medicines, lifestyle adjustments, and surgery to treat many of them.