After visiting a few farms here and there, we have finally come to the conclusion that we are having goats instead of sheep. We just have the largest priority of getting rid of as many thistles as possible! Apparently sheep are a little more picky than goats and aren't exactly going to cooperate with us with getting rid of the weeds. We are getting Nigerian Dwarves hopefully!
The goats in Vermont were so friendly, but the sheep were even more friendly! Here's a picture: