It's #InternationalUngulateAwarenessDay: a celebration of hoofed mammals (pigs, cows, deers, horses, elephants, rhinoceros, giraffes, camels, tapirs, okapis, etc). Sadly some, like this #SumatranRhino, are critically endangered. 🎨 Proc. Zool Soc London 1872 www.biodiversitylibrary.org/page/28612269