Given the vast quantities of avocado that one of my dogs used to eat, and how much chocolate another one has consumed in a sitting before we caught him with minimal side effects, I take most of that with a grain of salt. A lot of what's listed there has the same effect in humans, so it's kind of silly, and for example the one about garlic, using the math they give my dog would need to eat over 1/3rd of a pound of garlic to get the toxic effects. That sounds horrifying for more reasons than just digestive issues.