Okay, this one is something you can have fun with. Squirrels were found to chew up rattlesnake sheds and then lick their fur to help disguise their scent with the snake-scented saliva to thwart the snakes.
You can find the original papers in:
Clucas B, Owings DH, & Rowe MP. In press. Donning your enemy’s cloak: ground squirrels exploit rattlesnake scent to reduce predation risk. Proceedings of the Royal Society B.
Clucas B, Rowe MP & Owings DH. In press. Snake scent application in ground squirrels (Spermophilus spp.): A novel form of antipredator behavior? Animal Behaviour.
