Petco Text Logo
Petco Pet Logo

My dog ate chocolate! Is it poisonous and how much is too much?

Updated On September 23rd, 2025

Hello, I am looking up urban legends for a class and one of our questions was if chocolate is really poisonous to dogs. If so, how much chocolate can poison a dog and why?

1 Answer

Most Helpful Answer

Image profile

Answered By Jenny, DVM

Veterinarian

Published on September 10th, 2017

yes, the theomorbine is the toxic principal and the darker the chocolate the more toxic it is. bakers chocolate is the worst for dogs. It is dose dependent based on the dogs weight. It typically causes muscle tremors and a change in heart rate and seizures.

Vote icon

2Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored