- The amount of chocolate given.
- The type of chocolate (some chocolate contains higher amounts of theobromine than others)
- The size and weight of the dog
- Potentially, the medical history of the dog.
I recently came across an interactive tool that I feel will be of interest to you in relation to the above information.
Dog Chocolate Toxicity Meter
It's very interesting, very informative and can be checked out here..https://petcare.com.au/calc/choctoxicity/