Koalas might look cute and cuddly but they mean business when it comes to finding a koala woman. Researchers in the UK are studying the mating sounds of male koala bears that defy their size and cuteness. It’s a low pitch bellow of sorts. It’s thanks to a newly discovered organ that looks and acts like another set of vocal chords outside of the larynx. The male koala exhales with gusto making a sound that resembles belching. But men you couldn’t make that sound if you tried… This organ has never before been seen in land-dwelling animals, and allows the koala to produce a pitch 20 times lower than expected for their size so they can impress the ladies.