:( I don't want to burst your bubble, but that wasn't exactly what I meant by "bit in half". He didn't eat half the dog in one go, he just caught it with his claws, and literally bit through its spine, so that it was in two pieces. Hence, "in half". I get what you're thinking, with the droppings, but sadly it's a no-go.

EDIT: Plus, it was a big dog. Even a griffin would probably choke, trying to fit half of it down their throat.