I swapped a black Angus bull calf and it has a bad or hurt left hind leg. The legs is always out behind the calf. He will not bring it forward. The calf will not apply pressure onto it. When it is laying down it is laying on the bad leg. Is there something I can do to help the calf? Is is broken? Is it out of place in the joint? Should I call a vet? Any advise will greatly be appreciated.