Edna: Your boy's suit I designed to withstand enormous friction without heating up or wearing out, a useful feature. Your daughter's suit was tricky, but I finally created a sturdy material that can disappear completely as she does.
Viper redirects here. For other uses, see Viper (disambiguation). The Viperidae (vipers) is a family of venomous snakes found in most parts of the world, excluding Antarctica, Australia, New Zealand, Madagascar, Hawaii, various other isolated islands, and north of the Arctic Circle. All have relatively long, hinged fangs that permit deep penetration and injection of venom.
Vipers include some of the deadliest snakes. A viper has a stocky body, a wide head, and long, hinged fangs at the front of its mouth for injecting venom. The venom causes a very painful wound that can be fatal. Vipers target warm-blooded prey, such as rats and mice, and some hunt during the day. One group, the pit vipers, are mainly active at night. They have a pair of heat-sensitive pits between the eyes and mouth for detecting the body warmth of prey.