I have a 6 month old heifer calf that is in heat. She is still on her mom and the herd bull is still running with them. He's a 4 year old bull. I'm just worried he might hurt if he tries to mount. So far she won't let him. I always shoot all the heifers with lute in the fall when I work them so I'm not worried about her getting bred. Just concerned he could hurt or harass her too much. Anyone else ever have this issue?