I've got a couple of sheep out in the pasture that are due for butchering and I'd like to tan the hides. I have done small animal hides before, but I'm sure that sheepskin is a little different. For one thing, do I try to wash the sheep before butchering? (Please don't say yes) This is mostly for fun, so if I don't get professional quality hides, I'm ok with that. Anybody have any pointers?