I got a 4 year old bull that seems to have a problem. Noticed he lays around more than usual, limps or seems to walk stiff legged. I could not find any issues, had vet look at him and thinks it is up in the shoulder. He is a 1800 pound or more bull. Vet says he should be ok breeding next year but I am worried. Hasn't showed no improvement really over a few weeks. I am concerned he may not cover 20 or so cows next spring. My thoughts are if he missed a few that will buy a bull. Thinking about culling now and trying to replace him. thoughts?