Hi I have a blind deaf double merle border collie I got a few weeks ago. He is very smart, already walking on a leash, potty trained, crate trained, almost have sit, and we have overcome food aggression. This is his first indoor home and he's now 7 months old. I really need some advice on games that border collies like to play that stimulate their mind and use energy that he could play. I know he needs to do something as when he gets bored he spins and chases his tail.