The intelligence of Sheeps

"It really is about time we stopped making fun of sheep. They can not only recognise each other's faces, especially sheep they are socially close to – they can remember significant others for at least two years. They can also discriminate breeds, preferring to look at their own.

What's more, there is evidence that they can group plants by family and memorise the correct route through a maze. They have sophisticated social lives too: rams become long-term buddies and stick up for each other in fights."

- More here on the Apthromorphized verision and the unknown unknowns remains intact.