The platypus has puzzled researchers for centuries. From its venom-filled spurs, milk-secreting skin, and ability to eat a quarter of its body weight every day, the egg-laying mammal even had European zoologists believing it was a hoax well throughout the 19th Century. A recent study published in the journal Mammalia adds to the duck-billed creature’s lengthy list of peculiarities. Apparently, when illuminated with ultraviolet light, the platypus’s dull, brown coat glows. More Read more