My pup, Aj, is doing great with sledding. The only problem is that he doesnt seem to understand that i dont want him going to the bathroom while he has his harness on. I always let him have a bathroom break before and after i put his harness on. Last night he had pooped right in the trail of the sled, and the sled ran over it... Does anyone know how i could teach him not to without getting him scared of his harness?