The Muppet Sheep
One of the greatest and funny sheep ever designed, are the Muppet Sheep.
I just love them!
One sheep made his debut in Milton Miller's Barnyard Philharmonic Trio, the others appeared for the first time in the episode guest starring the Star Wars cast (#89)singing "Rama Lama Ding Dong". One of the sheep was a black lamb with white fur, and one of them (who in one episode turned into Super Sheep) had horns.
They should get their own show!