I almost lost my Grin because he jumped the kitchen gate during the night and got at a pound of unsweetened baking chocolate. He ate 3/4 of it, puked most of it all over the carpet, enough of the rest got into his brain and heart that he was a twitching mess barely able to keep out of seizure territory. Once I figured out what was going on we got him to the Vet ER, and he was there for 72 hours on sedatives and heart medications. He slept for nearly a week solid when he got home, only getting up to poo, pee, eat and drink. And his metabolism was never quite right after that, I think it maybe did something to his pancreas - he had occasional attacks of pancreatitis, we could only feed him the cheapest, lowest protein kibble he could survive on. He was a 40 lb lab/Italian greyhound cross. Lived to about age 11.
