Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. In a Costa Rican ...

The bubbles the anole lizards use may act as a "physical gill" that can pull oxygen from the water while accumulated carbon dioxide escapes into the water over the surface of the bubble in a process ...

Some anole lizards have a newfound superpower: They can breathe underwater by trapping air in a bubble on their snouts. What’s more, these reptiles can stay submerged for nearly 20 minutes by ...

Editor’s note: A version of this story appeared in CNN’s Wonder Theory science newsletter. To get it in your inbox, sign up for free here. Komodo dragons with iron-tipped teeth. Thirteen-foot-long ...

Some urban lizards have been hiding a heavy secret: They may be among the most lead-tolerant vertebrates on the planet. The average anole’s lead level was 955 micrograms per deciliter of blood, over ...

One of the most commonly seen lizards in the Southern states is the green anole, also known as the North American green anole ...

In a Costa Rican rainforest, a small, semiaquatic lizard called a diving anole leaps into a stream. Minutes pass, but the anole doesn’t surface for air, as these lizards typically do. Instead, the ...