From publisher blurb:
Few creatures in the natural world can tap into our primal fears and fascinations like snakes. A vital part of mythology and cultures around the world, snakes have always generated strong emotions in humans. So why are they so wimped out in the SRD?
SNAKES! offers revised rules for using snakes in your game. From snake-derived products like snake oil and antivenin to new rules for handling snakebite injuries, SNAKES! makes these amazing reptiles more interesting and useful in your campaign world.
SNAKES! also includes 12 real world snakes, presented for use in either fantasy or modern d20-style games.
Anaconda
Boa Constrictor
Python
Black Mamba
Death Adder
Golden Tree Snake
King Cobra
Northern Adder
Rattlesnake
Sea Snake
Spitting Cobra
Water Moccasin
All crammed into 13 pages of concise reference material!