Why?
Chocolate contains theobromine and caffeine, two stimulants that cats clear very slowly. They build up in the body and act on the heart and nervous system. The darker the chocolate, the more it contains: cocoa powder and baking chocolate are the most dangerous, and milk chocolate is less potent but still toxic. For an animal that weighs a few pounds, a small amount can already be a problem.
How much?
No amount is safe. Keep chocolate, cocoa, brownies and chocolate spreads in a closed cupboard, and don't leave an open bar lying around.
The risks
- Vomiting and diarrhea
- Restlessness, hyperactivity and excessive thirst
- Racing heart or irregular heartbeat
- Tremors and seizures
- Symptoms that can show up hours later
Your cat ate some: what now?
Call your vet or an animal poison control center right away, without waiting for symptoms: they'll assess the risk based on the type of chocolate, how much was eaten and your cat's weight. Keep the wrapper to give them that information. Don't try to make your cat vomit yourself.
Better options
To treat your cat, go for a cat treat, a small piece of plain cooked chicken or a bit of catnip.
Common questions
Is milk chocolate less dangerous than dark chocolate?
Yes, it contains less theobromine, but it's still toxic, and it adds fat and sugar. Dark chocolate, baking chocolate and cocoa powder are the most dangerous.
How long after eating chocolate will my cat show symptoms?
Often within a few hours, and they can last a long time because cats clear these substances slowly. That's why you shouldn't wait for signs before calling your vet.
This information is general and does not replace advice from a veterinarian. If your cat has swallowed something toxic, call your vet or an animal poison control center right away, without waiting for symptoms.