Why do dogs chase there tails?
depending on how aggressively they do it,it can be a sign of neurotic problems, some times its a case of boredom and just plain lack of exercise & play time stimulation. a happy well-adjusted dog is a well exercised and walked dog !!!!!
they think it another thingb
because "fetching sticks" is just too goofy...;-)
Because they're there.
They have a built in toy! It is attached right there to their bodies and goes EVERYWHERE with them. They will never lose it!!!!
Because they think its entertainment like a toy attached to them
Just to play with and bite and jump probably just to have funnnnnnn!!!!!!