Rabbits and Their Tastes

Certain rabbits have peculiar culinary interests. I have alluded before to the broad tastes evinced by Calypso Spots, who likes not just most fruits, vegetables, and hays, but also macaroni and cheese, Indian cuisine, nuts, chocolate, gingerbread, yogurt, and countless other things that are best not given her in more than small doses. It was no surprise, then, when she expressed her grave disappointment that I had eaten an entire fortune cookie without giving her any crumbs.
I was much more disturbed to discover that when Orion discovers a pile of fur I have just groomed off him or Ms. Spots, he will proceed to begin eating it as though it were hay. He has done this twice in the past few days, and therefore I think this means that no piles of fur can be left temporarily for him to find.
Could this be the explanation of his abnormal bulk?