Unidentified Mysterious Animal

Cuvier's Beaked Whale ( Ziphius cavirostris )is the Unidentified mysterious animal  most widely distributed of all the beaked whales . It is the only member of the genus Ziphius . Another common name for the species is Goose-beaked Whale on account of the fact that its head is said to be shaped like the beak of a goose . During the Middle Ages, this animal was thought to be a monster with a fish's body and an owl's head. Georges Cuvier first described it in 1823 from part of a skull found in France in 1804.

Elasmotherium ("Thin Plate Beast") is an Unidentified mysterious animal extinct genus of giant rhinoceros endemic to Asia during the Pliocene through Pleistocene living from 3.6 mya —126,000 existing for approximately 3.5 million years