It's finally koala breeding season, meaning now's a great time to revisit the male koala mating call.
Male koalas can bellow at a pitch that is 20 times lower than expected for their size, thanks to a special set of vocal folds that other land mammals lack.
SEE ALSO: Koala crashes house, tries its best to climb up a dancing pole
The result is a sound that's deeply sexy to female koalas and horribly upsetting to pretty much everyone else. But hey, if that's your thing...