Curiosity

[Sapphyr]

So, I've just got a simple little question that may not be smiled upon, but it's actually my mother's question. I couldn't care one way or another, but my mother has always wondered if the pinkies, fuzzies, mice, rats, etc. that are frozen were just thrown in a freezer, euthanized(or similar methods), or died naturally or from some form of illness(genetic or otherwise).

I'm an animal lover like she is, but mother nature is mother nature in my eyes, so I accept it for what it is. Besides, mice only live a year, and it was gonna happen one way or another, right?