美國毒蜥（學名：Heloderma suspectum）亦稱為希拉毒蜥或鈍尾毒蜥，英文有「Gila Monster」之稱，因為希拉河盆地（Gila River Basin）而得名。美國毒蜥是世界上僅有的三種毒蜥的其中一種〈另一種是墨西哥毒蜥和危地馬拉珠毒蜥〉，主要就分佈在美國西部,南部各州,以莫哈維沙漠(Mojave)為中心,延伸進入墨西哥，
美國毒蜥有兩個亞種:分佈區北部的黑帶美國毒蜥(H. s. cinctum)和分佈區南部的網紋美國毒蜥(H. s. suspectum)。
美國毒蜥以小型鳥類，爬蟲類卵為主食。
- Beck, Daniel D. Biology of Gila Monsters and Beaded Lizards. Berkeley: University of California Press. 2005. ISBN 0-520-24357-9.
- Bogert, Charles M.; Rafael Martin del Campo. The Gila Monster and its allies: the relationships, habits, and behavior of the lizards of the Family Helodermatidae. New York: Bull. Amer. Mus. Natur. Hist. 109:1–238. 1956: 238. Online .pdf （页面存档备份，存于互联网档案馆）
- Capula, Massimo; Behler. Simon & Schuster's Guide to Reptiles and Amphibians of the World. New York: Simon & Schuster. 1989. ISBN 0-671-69098-1.
- Carmony, Neil B.; Brown, David. Gila Monster: Facts and Folklore of America's Aztec Lizard. Silver City, NM: High-Lonesome Books. 1991. ISBN 0-944383-18-1.
- Cogger, Harold; Zweifel, Richard. Reptiles & Amphibians. Sydney, Australia: Weldon Owen. 1992. ISBN 0-8317-2786-1.
- Ditmars, Raymond L. Reptiles of the World: The Crocodilians, Lizards, Snakes, Turtles and Tortoises of the Eastern and Western Hemispheres. New York: Macmillan. 1933: 321.
- Freiberg, Dr. Marcos; Walls, Jerry. The World of Venomous Animals. New Jersey: TFH Publications. 1984. ISBN 0-87666-567-9.
- Roever, J. M.; Hiser, Iona Seibert. The Gila Monster. Austin, Tex: Steck-Vaughn Co. 1972. ISBN 0-8114-7739-8.
