prerequisite definition, meaning, what is prerequisite: something that must exist or happen before something else can exist or happen: . Learn more.
Photos by J.D. Willson unless otherwise noted. Description: Brown snakes are small - 6-13 in. (17-33 cm) - snakes that are usually brown, but can be yellowish, reddish, or grayish-brown. They usually have two rows of dark spots, sometimes linked, along the back and a dark streak down the side of the head.The belly is light brown to white.A series of tiny black dots are often present along each side of the belly. The young have a yellowish collar going down the neck with a less evident dorsal pattern. This snake looks similar to earth snakes (Virginia sp.) but those species lack spots on the back and head.escription: Brown snakes are small - 6-13 in. (17-33 cm) - snakes that are usually brown, but can be yellowish, reddish, or grayish-brown.
Gray Rat Snake. 25-84 inches. Tan or gray with large dark brown or black blotches down the back and a smaller series on each side; some scales yellow, orange or red producing a calico effect; underside white anteriorly, grading to gray or pale brown with obscure markings towards the tail. Young rat snakes are pale gray with dark brown blotches. Scales slightly keeled on the middle of the back, and in 25-27 rows. The Western and Gray rat snakes are distinguished on the basis of genetic differences rather than appearance. Use distribution to identify rat snake species.