On: Sheep are not stupid, and they are not helpless ei...

[Animats]

Domestic sheep have been bred to produce more wool, not jump fences, and to be herd-bound and submissive. That started millennia ago.[1] Unless you find wild sheep, you're not seeing the normal animal; you're seeing a human-created meat and wool machine.

[1] http://www.ansi.okstate.edu/breeds/sheep/

[nickpsecurity → Animats]

That's a great point we should never forget with agriculture and livestock. Many of these things are a watered-down form of what's found in nature.