Meet the Newest Member of the Fluorescent Mammal Club The springhare — whose coat glows a patchy pinkish-orange under UV light — joins the platypus and other mammals with this perplexing trait. The springhare is yet another addition to the growing list of mammals with secret fluorescence.Credit...J. Martin and E. Olson, Northland College Feb. 18, 2021 And, breaking news: Two species of rabbit-size rodents called springhares do it. That is, they glow under black light, that perplexing quirk of certain mammals that is baffling biologists and delighting animal lovers all over the world. Springhares, which hop around the savannas of southern and eastern Africa, weren’t on anyone’s fluorescence bingo card.