My boy's a 75 lb mutt--some shar pei and possibly a bit of mastadon. He can't have anything with soy protein, soy lecithin, soy sauce--which is really odd considering his Chinese heritage. Anyway, that eliminates a bunch of doggy treats. But, he goes nuts for pig bones--the big femur is his fav. He can consume one in about an hour leaving nothing but bits of bone-dust on the carpet. If there is a little meat left on the bone, he will carry it around in his mouth for half-an-hour while he makes little crying sounds. I think he's already feeling sad that it's going to be gone soon. And, he's nuts for fried eggs and bacon which I fix him on the weekends. Rabbit doesn't spoil his dog. No way. 
He sounds just as "Neglected" as my boy! You need to give that dog a few more treats.

All the dogs I've ever known love cheese (My boy included)... But I can't blame them; so do I. When I go to Minyards I always get my boy One of those big smoked beef shank bones from the doggy treat aisle. It actually takes long enough for him to chew it up that he gets tired of chewing on it sometimes. And THEN there's tennis balls. I get him tennis balls every Christmas.

I'm gonna go play with the dog for a while....... Oh and one time a friend gave me a bunch of deer meat, and 4 or 6 deer legs included with meat still on them. (His doberman has a sensitive stomach, so he couldn't give them to him.) I made him chew those outside, because they were still bloody. That's the only thing that has ever made him ignore the neighbor's dogs when they came to the fence barking! I guess Bosco wants me to find a place to deer hunt again.

Made him feel like the big bad wolf he thinks he is.