Tail-chasing dogs probably have OCD, study says8/20/2012
First, they tell us our cats are clinically pathological. Now, it turns out, our dogs too are plagued by psychological neuroses. A new study at the University of Helsinki of 400 dogs suggests pooches who chase their tails have a canine version of obsessive compulsive disorder. The condition shows itself through tail-chasing, as well as things like obsessively chasing lights or shadows, biting or licking themselves, and compulsive pacing. Diet may have an effect on the disorder, as dogs who received nutritional supplements showed fewer symptoms. Interestingly, exercise didn't appear to impact their OCD. So, if you're feeling guilty about not getting Fido to the dog park, rest assured that's not why he's chasing the vacuum cleaner. [Source]
What obsessive behavior does your dog have?