Lizard Kings (Video)
Meet the cunning, clever, and fearless predator, the monitor lizard (2:07 min.)
http://www.pbs.org/wgbh/nova/teachers/lessonideas/3616_lizard_video.html

Wild Lizard Chase (Interactive)
See some of the sixty-plus species of monitor lizards in this slide show.
http://www.pbs.org/wgbh/nova/lizard/chase-flash.html

Gigantism and Dwarfism on Islands (Article)
What factors encourage a species to alter its dimensions on islands? Could the 300-pound Komodo dragon, the world's largest lizard, actually be an island dwarf? Consider these and other questions in this article.
http://www.pbs.org/wgbh/nova/hobbit/breed.html