Anonymous

You're too young to be on this list. Forum rules say 13 years old and older. Sorry kid.

Anonymous

Hippos are Mammals, Dinosaurs were reptiles.

Anonymous

Well, all organisms are related to all other organisms at some level. However, the most recent common ancestor of hippos and dinosaurs lived a very, very long time ago

Anonymous

Eehhh

Anonymous

They are a cousin of the cetacean (whale) family, actually, and their ancestors in between may also have been water-dwellers: Phys.org: "Who's your daddy? Hippo ancestry unveiled" https://phys.org/news/2015-02-daddy-hipp...