Going back to your snake bite theory Talana, it is a possibility,not had a sheep with one but a welsh cob filly. Within hours her head was massive, vet wasn't sure and pumped her full of all sorts, he put ropes up in the rafters so we could hoist her head up in a padded head collar and gently massaged her head with warm wet towels, her tongue came rigid and stuck out about six inches, the vet has graphic pictures I only have one of her tongue. We smothered her tongue daily with honey and wrapped it in wet cloths, our lovely vet tubed her daily, the swelling stopped at the back of her jaw, any further and she would ve been on dangerous ground. After a week she started to improve thankfully, she s now a rather humanised fifteen hand cob, but I d rather she be here and pushing her luck than not be here at all. I know different species but my point is yes bites can move quickly, and this time of year like the spring,adders get slower and are more likely to retaliate than slink away. X