An "Usborne Internet-linked" book contains descriptions of Web site specially chosen to take readers further into the subject in a fun and informative way; links are found on the "Usborne Quicklinks Web site" at the end of this cataloguing record. -- Discover amazing facts about snakes of all shapes, sizes and types, what triggers their hunger and aggression, where to be on lookout for their attacks, and how they are able to "sense" their environment.