Got a question for dog breeders. If you were to breed dogs for stamina and/or endurance mainly for running (any breed; mushers, greyhounds, hunting, etc.), is hyperactivity a result of or a consequence of such breeding or can calmness be bred separately? If you say consequence then what's the percentage of hyperactivity is based upon such breeding?

This is what I define hyperactivity. A dog which need to burn excess energy. If left alone indoors for a period of a couple of weeks or months, it will develop a habit of burning energy.

Calmness I define as the Mustlander (I believe) where it's common for the dog to lay all day long with the occasional 1/2 hour walks a few times a week.

I just want opinions as there will be differing answers. I talk to alot of breeders but alot of them talk of confirmation regarding running, high tail, etc. but this subject really don't get discussed.