Watch video: What is the purpose behind animal weapons?
Male fiddler crabs attract mates by waving comically large pincers, the same ones they use to intimidate other potential suitors. Male elk drink calcium from their very bones to grow…
Male fiddler crabs attract mates by waving comically large pincers, the same ones they use to intimidate other potential suitors. Male elk drink calcium from their very bones to grow…