6. Diamond Rattlesnake
Known because of its famous tell tale rattle on its tail, the diamond rattlesnake is the deadliest snake in the North and South Americas. Rattlesnake is made more dangerous because it can strike as far as 2/3rd of its body length. Young diamond rattlesnakes are deadlier compared to adults because they do not know how to control the amount of venom injected to their victims. The venom of a rattlesnake can destroy cells and tissues, paralyze heart and lungs, and altering blood clotting. Most victims of diamond rattlesnakes are being amputated just to save the life of that person.