Checkered Garter Snake
Thamnophis marcianus

f13 @ 1/320s, ISO:640, Nikon D3S w 60mm macro

"Checkered Garter Snake," Wikipedia, the free encyclopedia. The checkered garter snake is a species of garter snake endemic to the southwestern United States, Mexico, and Central America. The checkered garter snake is typically greenish in color, with a distinct, black checkerboard pattern down its back. It is capable of growing to a total length (including tail) of 42 in (107 cm), but 28 in (71 cm) is closer to average.T. marcianus will strike and bite if provoked. It will also release a foul-smelling liquid from its cloaca onto attackers. T. marcianus has been found to have mild venom.
Jones Alta Vista Ranch, Jim Hogg County, Texas