Serpentes
—
Snakes
Families I've seen:
Boidae
Boas
Colubridae
Advanced Snakes
Dipsadidae
Rear-fanged Snakes
Elapidae
Cobras, Kraits, Coral Snakes
Lamprophiidae
African Advanced Snakes
Leptotyphlopidae
Slender Blind Snakes
Pareidae
Snail-eating Snakes
Psammophiidae
African Sand Snakes
Pseudaspididae
Mole and Western Keeled Snakes
Pseudoxyrhophiidae
Madagascar Brook Snakes
Pythonidae
Pythons
Sanziniidae
Madagascar Boas
Typhlopidae
Blind Snakes
Uropeltidae
Shield-tail Snakes
Viperidae
Vipers
Xenopeltidae
Sunbeam Snakes