The northern alligator lizard (Elgaria coerulea) is a species of medium-sized lizard in the family Anguidae. The species is endemic to the North American west coast. The northern alligator lizard is a medium-sized slender lizard. Adults reach a snout-to-vent length (SVL) of about 10 cm (3.9 in) and a total length (including tail) of roughly 27.5 cm (10.8 in). It has a distinct skin fold on each side, separating the keeled scales on the back from the smooth ventral scales. The skin varies in color, but can be brown and white or greenish yellow and brown. Dorsally, E. coerulea is brownish in color and often has dark blotches that sometimes blend together into bands. The throat and mouth area of some young individuals can be yellow. The belly is light gray. The eyes are dark. he typical diet of E. coerulea includes crickets, slugs, beetles, spiders, and moths, but it will also take larger prey, such as small lizards, and will even eat small baby mice if given the opportunity. (Source: Wikipedia.org, CC BY-SA)