I have a bull that acts like he has a belly ache. I called the vet thinks he,ll be fine. When he stands up and walks he tosses his head and flix his tail alot Then lays back down. He loks o.k. laying there and chews his cud, has been having bowel movements.Been 12 hrs now ,he was chasing the girls all day yesturday He has been nibbling a little hay than stops.What do you think? am I just worrying to much? we keep a pretty close eye on them.