Editor's note: Of the five living species of rhinos, three are critically endangered due to misinformation that their horns have medicinal value, a belief for which there is zero proof. Their horns are actually made of keratin, just like our fingernails and hair, so anyone seeking the rhino-cure can munch on their own nails for a similar result. Treat your screens to some fun and fascinating Rhino wallpapers and help spread the word that it’s okay to leave these snorting, mud-loving creatures alone!