Eastern diamondbacks are the largest of the rattlesnakes, and in fact, are some of the largest venomous snakes in the world. They are capable of reaching more than 8 feet and can weigh as much as 30 pounds. Adults average much smaller than that, however, and diamondbacks over 6-feet long are rare today.
Although diamondbacks are potentially very dangerous, and awe inspiring, to meet in the wild, they are shy and retiring snakes that try to avoid contact with humans and other large predators. Rattlesnakes are pit vipers, a group of snakes that have special thermal receptors on the front of their faces that allow them to see images in infrared, even in total darkness. As adults, diamondbacks feed on rats, squirrels and rabbits.