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…
Animal personalities can trip up science, but there is a solution
Animal personalities, A few years ago, Christian Rutz began to wonder if he was giving his ravens enough trust. Rutz, a biologist at the University of St. Andrews in Scotland,…