Apparently, sheep like weed and they'll eat a lot of it!
High Times reported that a flock of sheep were displaced by Storm Daniel and went on the hunt for something to eat. That brought them to a greenhouse in Magnesia and they hit the jackpot: about 600 hundred pounds of medical marijuana! That is a whole lot of pot and the herd felt the effects. The farm owner, Yannis Bourounis, said that the sheep were jumping high up in the air!
Think about how small of an amount of weed it takes to get high, if you smoke it or ingest it as an edible. Now imagine how the sheep were feeling! It probably took quite a while to come down from that.
You can read more about the sheep and their weed-venture from High Times here.