My steer keeps kicking his belly and acting irritable. I slick sheared him this past weekend and thought it was the flies bothering him but there are no flies around. I tied him up for a few minutes and he wouldn't stand still and would constantly kick his belly. I go to untie him and all of sudden he goes crazy and won't walk right. He's always been a good steer, very sweet but he turned nasty overnight. He's eating and gaining weight, not bloated or anything like that. Any ideas on what's wrong and what I should do?