David presents vertebrate species who cope amazingly with freezing cold. First the emperor penguin, where the males especially brave incredible cold to mate and protect their offspring. Next North American frog species who mastered the art...See moreDavid presents vertebrate species who cope amazingly with freezing cold. First the emperor penguin, where the males especially brave incredible cold to mate and protect their offspring. Next North American frog species who mastered the art of surviving frost even in ice thanks to a sort of cry-stasis. Written by
KGF Vissers
See less