Indohyus

Indohyus is a genus of digitigrade artiodactyl originally known from Eocene fossils in Himalayas of Asia, but has since been brought back from extinction and now lives in modern times. This small chevrotain-like animal found in the marshlands, swamps, and grasslands is a close relative of whales.

Description
About the size of a raccoon or domestic cat, this omnivorous long-tailed pig-like creature shares some of the traits of whales, and show signs of adaptations to aquatic life, including a thick and heavy outer coating. Their bones are similar to the bones of native modern creatures such as the hippopotamus, and helps reduce buoyancy so that they could stay underwater for a long time.