I've always thought it was a predatory instinct to mask their scent when hunting... I can't remember where I heard that or if I just assumed that's why they did it.
Prey #1~ "No, on second thought, I don't think it's a Basset Hound. I think we're being followed by a dead fish covered in poop."
Prey #2~ "Oh, that's cool then."[/b]
:lol: I'll have to repeat that, it's a good one!