@lewdseagull @sun @Nudhul There was one in the 1970s, but I don't know if they knew back then that chocolate wasn't good for dogs.

(In the 1980s, I read an article where all the big pet food companies had discovered that dogs love the taste of garlic. Turns out this predated the story about the dog that died of garlic poisoning and prompted the studies that changed the advice.)