he has alwayas done this. he doesnt like toys like that he only likes sticks and he runs around with them.
He's 6 years old? Has he always done this or is it a new behavior?
Not sure what it could be. Have you had him to the Vet to at least get a blood panel done?
I remember seeing a segment on The Dog Whisperer where someone owned a dog that did this, mainly chasing the tail, I believe. Maybe you can see if you can find that episode.
Have you tried maybe giving him a Kong or something to divert his attention and keep him busy?