I'm not often a fan of knitted things for animals but this one is awesome.This cute free pattern is from Drops Designs. (aww puppy!) If you check out the ravelry projects for this there are also some really cute cat coats!
The cutest thing I think I have ever seen are these baby goats in sweaters (jumpers)!
Machine knit for the kids so they don't get cold. These pics are from Fias Co Farm, A goat husbandry site.