Most people think of the Valais Blacknose sheep when reading nursery rhymes, and it’s rarely seen outside of Europe. Its fuzzy black face, ears, and hocks make it look more like a toy than a living ...

Photos of Costasiella kuroshimae, a.k.a. the “leaf sheep” sea slug, have recently gone viral on Twitter again, and for good reason. The leaf sheep doesn’t just have an absurdly cute name, it also has ...