i had read that it is a primitive instinct to hide their own scent, for hunting purposes? they can sneak up on something if they smell like it more than their own scent. Lucan actually craps deep in bushes or high on mounds ( even perched his ass up on a light standard more than once - wish i had a vid of that lol) so no other animal can get to it easily. (Lucan was wild on an indian reserve in Canada when i rescued or kidnapped him)