Drop Bears and Koalas

People knew coalas existed, but there were still big delays in the publication of some of the information about them. Early european settlers in australia considered the kawala to be a prowling stuff like animal with a fierce and menacing look. Drop bears are apparently not as common as alas, and that would make them hard to study too. With all those factors, you can imagine how it would take a long time for scientists to clearly distinguish between the two.