Baby rattlesnakes are born live and already have the classic diamond pattern on their bodies and triangular shaped heads like the adults. They are small compared to the grown ups, around 6-12 inches long, making them tricky to spot. Brian Yatsattie's iridescent black lip shell baby rattlesnake has jet eyes and a sweet rattle. About 2 7/8" long, 7/8" wide and 1/8" tall.