There's no denying that Physeter macrocephalus - the Sperm whale or Great sperm whale - is a very special, very weird mammal, and (as yet) I haven't done it justice at Tet Zoo. That will be rectified in time, honest (I've been keen for years to write about the suction-feeding, and about the battering ram hypothesis). The excellent Zoological Museum at Copenhagen (Denmark) has tons of amazing specimens on display, and among them is this excellent mount of a Sperm whale and an assortment of other large mammals (photos courtesy of Markus Bühler).