I have a German Shorthaired Pointer which appears to be the breed on the pic (he has a black one).
GSP mixes are bred often for sled dog races. GSPs are the most high-energy dogs I've ever seen in my life and they can be very muscular.
I was thinking of starting bikejoring as a way to get some of his energy out, you're just a dumbass.
I wanted to know if anyone else here does it.