Mangalitsa piglets, otherwise known as wool pigs, follow their mother in Germany.
Photograph by Dirk Eisermann, Laif, Redux
A female great curassow sports her wavy black head feathers on Costa Rica's Osa Peninsula.
Photograph by Suzi Eszterhas, Minden Pictures
Gorgon's head sea stars have curly arms, each of which contains a spinal cord.
Photograph by Sue Daly, Minden Pictures
