The Natural Inquirer by R. L. Crabb.
Crabb is mainly known for his underground series Tales of the Jackalope. This book has a few pages of jackalope lore, but most of the pages concern other species like:
The is not a comic book per se, but is just a series of these drawings and descriptions.
Crabb is still active today.
This post is part of the Fantagraphics Floppies series.