 Ang Lee (qv) struggled continually with the sheep during the  shoot. Apparently sheep dont drink from running water, only ponds  and dams. Ang tried all day to get the sheep to drink from a stream,  but they wouldnt oblige. He had to give up on the shot. Also,  American sheep carry a bacteria/virus that Canadian sheep dont  possess. The films scene where two herds of sheep become mixed up  had some nightmarish real