Beaver Love Under the Ice

In January or February, when females are in estrus, beaver couples exit their lodgings — which may also be occupied by the previous year’s offspring — and swim attentively together. Without further preliminaries, the male clasps his partner, moves aside her paddled tail and slides around her so that they are both turned  slightly sideways. They mate for anywhere from 30 seconds to four minutes. After catching a breath of air, grabbing a bite, perhaps making small talk and resting for 20 to 60 minutes, they may repeat their love plunge three or four times.