Why do some dogs chase there tail?
Some do it out of boredom, some become obsessed with it...to the point that they will actually mutilate it...One's that do it rarely, I think just happen to see it, but realize soon enough that it's attached to them, and harmless.
Because they think its another living thing or animal that is not part of their body, and that they dont control, so if you have a dog that chases other things, it will probably chase its tail.
Just a guess,their way of having fun and most people think it funny and cute how they do it.
to entertain themselves...lol I never really thought about it..my dogs do it all the time
dogs chase their tail because they think it is a different thing trying to attack them
lol thats what I thought but I wasnt sure
shits and giggles