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My 70lb dog ate Reese's. Is chocolate toxic or is fat the issue?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 2 years and 7 months old | 70 lbs

70lb dog ate four Reese cups

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 26th, 2022

Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Prince. Oh no, that's not good! As I'm sure you know, Reese's contain chocolate and chocolate is toxic to dogs. At 70lbs of body weight, he can eat about 30 average size peanut butter cups without suffering chocolate intoxication; however he may get gastro-intestinal problems such as diarrhea and pancreatitis. Fatty foods can give dogs pancreatitis, which can be life threatening. The best thing to do is take him into the vet to have vomiting induced to get rid of the peanut cups. If you chose not to do this, you need to watch him for vomiting, diarrhea, vomiting undigested food, lethargy, a loss of appetite, and vomiting water. If you see any of those signs, it's an emergency and he will have to see a vet right away. I hope this helps!

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3Pet Parents found this answer helpful

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My dog weighs about 21 pounds he ate about 4 mini Reese’s hearts which would be about 2 regular size Reese’s I’m estimating? It was about 40 minutes ago and he is acting normal. Should I take him to a vet?
Hi there, if you wish you could have him checked over but the effect of the chocolate per se will likely be gastrointestinal signs. A tummy upset and no severe toxicity signs There is also sugar and fat between the ingredients which could trigger pancreatitis over the next few days. You have therefore the option of having him checked over now or monitor at home. If he should start to vomit and/or have diarrhoea you could have him checked over then. I also advise to feed him a bland diet of boiled chicken and rice , in small meals from tomorrow for 3-4 days. Alternatively you could offer him some gastrointestinal food from Hill’s or Royal canine . Your vet should stock these ! Hope all goes well
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My dog ate 6 reeses cups, he is 10 lbs and I know it’s mostly peanut butter but I can’t induce vomiting and I am very scared even though he is acting fine. I would guess it’s 1.5 ounces of chocolate overall.
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My 11 lb dog might have eaten 1 reeses peanut butter cup. Should I be worried? Her belly is broken out, but it has rashed like this before. I caught her licking a piece of the brown reeses cup wrapper.
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My 35-40 pound cockapoo just ate a king size Reese cup. When I caught him, there was nothing else in the candy wrapper and he was licking what was left. How worried should I be?
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I have 2 large dogs (110 and 100 pounds). One or both ate about 5-6 Reeses Peanut Butter egss sometime today (or possibly yesterday but I think today). They are acting fine. Do I need to make them vomit?
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Should I induce vomiting on my 11 lb dachshund who eat a Reese's Peanut Butter Cup, wrapper and all
I certainly wouldn't worry about inducing vomiting after just one peanut butter cup. The induction of vomiting poses more risks than the peanut butter cup does! Inducing vomiting at home with hydrogen peroxide comes with the risk of aspiration and significant irritation to the esophagus and stomach. The wrapper will pass without a problem. There isn't enough chocolate in a peanut butter cup to cause any toxicity concerns. Worst case scenario, Jack may develop an upset stomach with a bit of vomiting and diarrhea. If he does, you can offer a bland diet of boiled white meat chicken and white rice for a few days before gradually transitioning back to his normal food. I hope that this helps and that everything goes well!
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My dog ate a king sized snickers bar. She eventually threw it up. Will she be ok?
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