Eatting half?

[wnateg]

It split pretty much where he nabbed it and chewed on it a bit. That back end piece was gone when I went to check. I have been thawing it by placing it on top of his cage in the morning when I go to work and feeding him around 7pm

That is definitely not sanitary. Would you thaw your meat by leaving it on the counter all day? You should thaw in the fridge for that long or run it under cold water for an hour or so, until its thaw. Then warm water or a blow dryer to heat it up once its thaw.