Ok, I've always thought these are bot fly larvae,
at least that's what I've always called them.

But have never seen more than 1 or 2 in any critter.

Was prepping a deer skull for a young man, and saw one deep inside the sinuses.
Then another, and another, and another...

Was about 2 dozen in total, deer looked good otherwise, although almost no fat on it, but to.be expected this time of year.

Bait!!! It is ice fishing time.....jk