We have a 1 1/2 yr old heifer (approx 750 lbs) that came up to eat last night and her lower lip was hanging down. She still had her appetite but couldn't hold on the range pellets to get them in her mouth. We had to manually put them in the back of her mouth to eat them. At first I thought she might have gotten kicked or something, but the jaw works just fine - it's the lip that is hanging down and looks like it's numb to her. Our vet it out until Thurs but his assistant thought it sounded like it could be a snake bite. Has anyone else had a problem like this? I don't know if she's had this before last night - we were gone the night before and didn't have them come up to eat (they are on pasture). Is there anything we can do for her?