"Don't have a dog, but have a 19-year old cat.
He gets raw chicken breast cut into fine strips. He wastes none of it. I buy frozen bags of it for $5 on-sale at the supermarket. It turns out to be cheaper than conventional cat food considering the amount of cat food he will waste.
Pretty spoiled, eh? "
Not as bad as some. When I was much younger I took care of a girl friend's cat for a few days, and decided to treat it by giving it some of the steak that I was going to cook. It slowly walked over to it, sniffed it, turned it's nose and walked off. Thinking the pieces were too big I sliced them smaller, but it still didn't like it. The steak sat there for a couple of days and the cat was pretty hungry when she picked it up. When I mentioned to her about trying to feed it she said that the cat only ate meat if it was lightly browned in butter.
The worse that I've heard of though are some friend's kids; they'll only eat hot dogs if they're peeled, and it's one of only a handful of things that they'll eat :^)