you ever take a male dog that still has his testicles for a walk?? He stops and pees on everything that has any scent of another dog on it...Bucks are no different. right now they are competing for every doe they can....not saying a small buck will come in looking for a fight, but if he smells another buck in his bedroom, he will come in and try to leave his scent as well. If there is a dominant buck in the area and he smells the tarsal glands of another buck during peak rut? Lock on and get ready!!!