Dangerous snakes are a group of reptiles that can be found in many parts of the world. They include VIPERS (6 letters), rattlers (8 letters) and asps (4 letters). VIPERS are venomous snakes with long, hinged fangs that inject venom into their prey. Rattlesnakes are venomous snakes that have a rattle at the end of their tail which they use to warn predators. Asps are venomous snakes found in Africa and Asia that have short, fixed fangs. All three of these snakes are considered dangerous and should be avoided.