Losing the herd mentality about sheep

Sheep are often seen as an animal that's stupid, noisy and cowardly, albeit cute. We even use the expression "lambs to the slaughter". But is this assessment really fair? British author and farmer John Lewis-Stempel, an expert on farming and the environment, has written a book entitled "The Sheep’s Tale: The story of our most misunderstood farmyard animal". He joined us for Perspective.