found one in the chest cavity of a deer I killed last year. It had come into the chest cavity from the nasal passage when I was hosing it out. it freaked me out a bit. I butchered the thing but wasn't sure I would eat it till I did some research and found out what they are. They lay eggs on the deers nose, deer licks its nose and the larva make their way into the nasal passage. the pupus grows there and then drops out/gets sneezed out and the fly hatches. creepy damned things. And the meat was still tasty.

David