Hippos

Hultgren lays out some drawing of hippos, but doesn't go into idealizing their shapes, so...did a bit a research on that.

The anatomy is influenced from some pictures I found in a compilation of tiffs that are really interesting, in that it seems like they were sketched out as someone dissected a human (or so I infer from a picture of a guy with a corkscrew to someone's head and the next image being a brain).

The expressions are again, from Faigin, well...some of them.