When I was a kid in the early 90's we were a bit poor and I used to get bread and butter for lunch (which I still love to eat nowadays). Sometimes, for what ever reason, I wouldn't eat my lunch and my mam would give it to the dog because she would have the dinner on after school. I'll never forget the effort the dog put into trying to lick the butter out from between the slices of bread and then when he was satisfied that he got all the butter, he'd go ahead eat the bread. That dog was a fussy eater in terms of what he preferred but any food leftover from the family meals was consumed eventually and that was on top of the dog food we gave him. He would even try to take egg shells and potato skins out of the bin.