Both Aragorn and Legolas chase their tails and it seems to go on forever. Legolas likes to chase his tail in the bathtub and I have no clue as to why.
Now the funny thing here is I have a dog named Cisco and he doesn't chase his tail and never has.
But, Aragorn and Legolas chase Ciscos' tail and that really bugs Cisco so he starts chasing them. He catches them and rolls them on the floor and just nuzzles them until they can't take it anymore!
If you can figure this one out then good luck to you as I have given up a very long time ago!