My local pet store, about 5 or 6 years ago had a few nasty hamsters that they couldn't sell. I had been friends with the owner for a few years and he always would give me deals on everything. So since he couldn't sell these guys, do to their mean nature, he gave them to me for my snakes. They were put out of there misery with a CO2 chamber and I proceeded to feed them off. I had a big normal, that on more than one occasion, ate the hamsters backwards! It must have been the crazy fur on these guys or something because she could not figure it out. Anyway, she never had any health issues or anything as a result of the backwards feeding. I've also seen corn snakes eat pinkies and hoppers backwards with no issues.