You Will Never Believe Why Koalas' Voices Are So Deep But I Bet I Can Guess What You're Thinking The Reason Is

“The pitch of male koalas’ mating calls is about 20 times lower than it should be, given the Australian marsupial’s relatively small size. Now, researchers reporting in the Cell Press journal Current Biology on December 2 have discovered their secret: gigantic koala dongs that make even elephant penises look diminutive by comparison.”