Whistler cocker has always been dog No 1, Jake BC was castrated at 6 months as Whistler was stioll No.1. Whistler was castrated about 10 days ago, Yesterday Jake bit him!! I notice today when Whistlr went into OH's office (Im next door) Jake curled his lip and Whistler wenout again. Is the change due to Whistler smelling different now he is castrated? Will it stop when they sorted themselves out?