My dog ate chocolate: what to do in the first hour
Chocolate poisoning in dogs is real, not an old wives' tale. Chocolate contains theobromine, which dogs process far more slowly than we do. How dangerous a chocolate raid is depends on three things: what kind of chocolate, how much, and how big your dog is.
The single most important rule: call a vet now, before symptoms appear. Signs can take hours to show, and by the time they do, the easy treatment window has often closed.
Go to a vet now if you see
- Any amount of dark, baking, or high-percentage chocolate — these are far more concentrated than milk chocolate
- A small dog and anything more than a stray crumb
- Restlessness, panting, racing heart, trembling, vomiting, or unsteadiness after eating chocolate
- Wrappers eaten along with the chocolate — foil and plastic add an obstruction risk
The first fifteen minutes
Work out what actually happened. Find the packaging: what type of chocolate, what cocoa percentage, and your best honest estimate of how much is missing. "Half a 70% dark bar" is exactly the sentence a vet needs. Weigh it against your dog's size — 50 grams means very different things to a Chihuahua and a Golden Retriever.
Then call a clinic — your regular vet in the daytime, a 24-hour clinic at night. Have your dog's weight ready. They will tell you whether this is a monitor-at-home situation or a come-in-now situation. Let them make that call, not a forum.
What not to do
Don't induce vomiting on your own. Methods that circulate online — salt, hydrogen peroxide poured freely — can cause their own emergencies. If vomiting needs to be induced, a clinic can do it safely and at the right time.
Don't "wait and see if he seems okay". Theobromine is absorbed slowly. A dog can look completely normal for several hours after a genuinely dangerous dose.
Preventing the next raid
Dogs that have raided chocolate once will do it again — it smells exactly as good the second time. Treat chocolate like medication in the house: high, closed, never in a bag on the floor. Festive seasons are the classic danger windows, when boxes sit under trees and on coffee tables.
Worth knowing while you're at it: grapes, raisins, xylitol (in sugar-free gum and some peanut butters), onions, and macadamia nuts are also toxic to dogs. The same call-first rule applies to all of them.
My dog ate a small piece of milk chocolate. Is it always an emergency?
Not always — milk chocolate is much less concentrated than dark. But the maths of dose versus body weight is a vet's call to make, and it costs nothing to phone. Call with the chocolate type, the amount, and your dog's weight.
How soon would symptoms show?
Often within a few hours, but they can take longer. Absence of symptoms in the first hour tells you very little, which is why calling before symptoms is the right order.
What about white chocolate?
White chocolate contains very little theobromine, but it's high in fat and sugar, which can cause stomach upset of its own. Large amounts, or eaten wrappers, are still worth a call.
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This guide is general information for pet parents, not veterinary advice, diagnosis, or treatment. Every pet is different — for any medical concern, consult a licensed veterinarian. If your pet seems to be in danger, contact a 24-hour veterinary clinic straight away.