My Dog Ate Chocolate: What To Do Right Now

Most dogs who eat chocolate are fine. But the amount that matters depends on which chocolate, and how big your dog is, so here is how to work out whether you are in trouble.

Usually it is the wrapper you find first. A torn corner behind the sofa, a foil twist on the kitchen floor, and a dog who looks pleased with itself.

Before you read another word: if you know or think your dog has eaten chocolate, ring your vet or an animal poison line now, then come back to this. It is far easier to treat a dog before it becomes unwell than after, and nobody will mind you calling over an empty wrapper. Vets would much rather reassure you.

What to do in the first ten minutes

1. Take away whatever is left and shut your dog out of the room it happened in.
2. Work out what you can. What kind of chocolate, roughly how much, how long ago, and what your dog weighs. These four things are exactly what you will be asked, and together they decide whether this is a nervous evening or a trip to the clinic.
3. Keep the packaging. The cocoa percentage and the bar weight let a vet do the sums properly instead of guessing.
4. Ring for advice. In the UK, the Animal PoisonLine. In the US, the ASPCA Animal Poison Control Center or the Pet Poison Helpline.

Do not sit and watch to see what happens. Theobromine, the thing in chocolate that poisons dogs, works slowly. A dog can look completely normal for hours while it builds up.

The dark stuff is the problem

This is the part worth understanding, because it is the difference between a shrug and an emergency.

Chocolate contains theobromine and caffeine. We clear both quickly. Dogs do not, so it lingers, winding up the heart and the nervous system. The more bitter the chocolate, the more theobromine is packed into it.

That means a Labrador who has stolen a few milk buttons is in a very different position from a terrier who has got into the baking cupboard. Baking chocolate and cocoa powder are the worst. Dark chocolate is genuinely dangerous. Milk chocolate is more dilute, though still a real problem for a small dog. White chocolate has almost no theobromine in it at all, and is more likely to cause an upset stomach than poisoning.

Size matters just as much. The same square of dark chocolate is a nuisance to a Great Dane and a serious problem for a Jack Russell.

Check what else was in it

This one catches people out. Chocolate often arrives with company, and the company can be worse than the chocolate.

Raisins in a fruit and nut bar. Macadamias in a cookie. Coffee beans under a dark shell. Xylitol in anything sugar-free. Each of those is its own poison, and a raisin-studded bar can be more dangerous than the chocolate around it. So before you ring, read the ingredients rather than just naming the bar.

The one thing not to do

Do not try to make your dog sick.

It is the first instinct almost everyone has, and it is the wrong one unless a vet or a poison line has specifically told you to do it. Home methods for inducing vomiting can injure your dog, and there are situations where bringing the chocolate back up causes more harm than leaving it where it is. Let someone with the full picture make that call.

What to watch for

Even after you have spoken to somebody, keep half an eye on your dog for the rest of the day. The signs to look for are:

• Vomiting or diarrhoea
• Restlessness, pacing, an inability to settle
• Drinking much more than usual
• A racing or irregular heartbeat
• Tremors or twitching
• A dog that feels hot
• In severe cases, seizures

If any of those appear, that is no longer a phone call. Go in.

When not to wait at all

Some situations skip the deliberation entirely. Ring a vet immediately, at any hour, if:

• Your dog is small and has eaten any amount of dark or baking chocolate
• You have no idea how much went in
• Your dog is already showing tremors, a racing heart or any of the signs above
• The chocolate also contained raisins, macadamias, coffee or xylitol

Why it always seems to happen away from home

Chocolate poisonings cluster around Easter, Halloween, Christmas and Valentine's Day, and they spike when routines break, which is why travelling is such a common trigger. Hotels leave chocolates on pillows and hampers on sideboards, both at perfect dog height, and a dog alone in a strange room will investigate.

It takes ten seconds to sweep a room before you let your dog settle into it. Check the pillows, the welcome basket and the minibar, and put anything sweet somewhere with a door on it.

Sources

This article was written using guidance from Pet Poison Helpline, a 24/7 animal poison control service for North America; ASPCA Animal Poison Control Center, a leading 24/7 animal poison control resource in the United States; and RSPCA, the Royal Society for the Prevention of Cruelty to Animals, the UK's oldest animal welfare charity. This guidance is for general information and does not replace a consultation with your own veterinarian. In an emergency, always contact a vet. Read [how we write our health guidance](https://rochsociety.com/how-we-write-our-health-guidance/). Last reviewed July 2026.