The Colubridae are the largest family of snakes comprising 12 subfamilies, 304 genera and >2,000 contemporary species, i.e., about two-thirds of all known living snakes. Colubrids are found on every continent except Antarctica, and in virtually all habitats. They are highly variable in size, colour, pattern, and body shape. The family is likely polyphyletic, and several sub-families, currently placed within the Colubridae, may be elevated to full families in the near future. Most colubrid snakes have solid and conical teeth, although some have short, erect fangs or grooved teeth at the rear of the upper jaw, capable of injecting venom which induces paralysis. Although the majority are not, or only mildly, venomous, several tropical genera produce medically significant bites. Many species are ground-dwellers, whereas others are almost entirely arboreal, subfossorial or semi-aquatic. The majority reproduces by laying eggs, but some are live-bearing. Diet includes small mammals, birds and their eggs, amphibians, lizards, other snakes, fish, and invertebrates. Some species are generalist predators, whereas others rely on a particular kind of prey.

		Rat snakes, Whip snakes, and Racers (Colubrinae)
		Ring-necked snakes, Caribbean racers, and Keelbacks (Dipsadinae)
		Water Snakes and Garter Snakes (Natricinae)
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