Stink fighting

Male ringtails are equipped with scent glands on their wrists which are used in "stink fighting" with a rival male. Here, two males stand facing each other a few feet apart and, repeatedly drawing their tails through these glands, they proceed to wave the tails over their heads, all the while staring in a hostile fashion at their rival. Eventually, one of the males will break down and run away.

I'm a stink-lover, not a stink-fighter.

http://lemur.duke.edu/animals/ringtailed/