What can be more curious than the presence of teeth in foetal whales, which when grown up have not a tooth in their heads; or the teeth, which never cut through the gums, in the upper jaws of unborn calves?
Zer gauza bitxiagorik bale kumekietan hortzak aurkitzea baino, behin hazi eta gero ahoan hortz bakar bat ere ez dutenean, edo txahal jaiogabeen goi-barailetan oietatik inoiz irtenen ez diren haginak aurkitzea baino?