One of my cows seems to be having trouble eating. Been watching her for 3 days now. She eats hay ok but to watch het eat grain, it looks like it may hurt her to stick her tongue out. Drinking water fine. I put a little cracked corn in for her and she ate it right up. The other cows eat the grain ok, is she just being picky. I called the vet anyway, they have never had shot one that I know of. What do you all think? Thanks!!