Tonite our favorite young heifer was laying down with lots of flies on her face. My brother went home to get the fly sprayer, and when he came back, she was grazing a little (she's on pasture). He noticed her tail was up, she was hunchbacked and she limped when she walked, but it wasn't on one particular foot. It was getting dark and the pasture has rough terrain, so we'll have to wait to check her in the morning. He thought her vaginal area looked a little swollen. Any ideas? She had a black leg shot when she was younger.