Cats vomit mostly due to hairballs. Kitty swallows excess hair while cleaning, occasionally with food or bile.
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Cats cannot tolerate many indoor and outdoor plants. Check and remove plants if your cat vomits green. Some poisonous plants make cats puke.
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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.
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Many human foods poison cats. Garlic, onions, seasoned meats, chocolate, and sugar can cause vomiting, cardiac arrhythmia, convulsions, and death in cats.
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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.
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Hairballs, strange substances, and more can cause intestinal obstructions, preventing kitten from eating. Visit the vet if your cat vomits.
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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.