I am wondering too if it isn't from guys leaving animals out overnight?
It seems like it is the thing to do nowadays with the advent of all the southern tree stand hunters who hunt private property. There is even a story on here where a guy left one out with the hot weather that we have been having. It just isn't deer anymore either, Elk, Bear. Shoot it, leave it out, replace your arrow, bam!
I know what you are insinuating though......