Iguanas are known to be some of the biggest lizards in the American region. Their tails, formed like whips, make up roughly half their size. Iguanas are cold-blooded animals that can easily adapt to ...

Physiological and Biochemical Zoology: Ecological and Evolutionary Approaches, Vol. 78, No. 2 (March/April 2005), pp. 163-172 (10 pages) Abstract Intermittent activity, alternating bouts of activity ...

PICACHO PEAK STATE PARK, AZ — The power of Arizona's desert predators was on full display recently in southern Arizona. Video taken by Randy Babb, a retired Arizona Game and Fish Department biologist, ...

Around 34 million years ago, the ancestors of modern iguanas likely embarked on what may be the longest overwater journey undertaken by a nonhuman, land-dwelling vertebrate species. Starting off the ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Around 34 million ...