Image of Eastern Diamondback Rattlesnake, Crotalus Adamanteus

-- largest venomous snake in North America and can grow up to 8 feet in length, but average size is three to six feet. The body is generally a shade of dark or light brown. Its pattern is a distinctive row of large, dark diamond shapes edged in yellow trim, running down the length of its body. The diamonds fade to dark rings around the tail, where the distinctive rattle begins. A dark stripe edged in yellow runs back from the mouth to the eyes on each side of the head. There is no significant difference in appearance, between males and females except that males are generally larger.