Here’s a fun fact about koalas: something like 90 percent of them have Chlamydia! Normally it doesn’t cause any problems, but when they get stressed it leads to raging, uncontrollable diarrhea and a condition called “dirty tail.” So maybe don’t cuddle them like we all know you want to. Also, “Dirty Tail” sounds like a deep cut from a Nickleback album. 3.3/5