Geckos don’t have long clawsThe fingernails of an animal, such as a bear or cat. They help to grab prey. In birds, they're called talons., but they are able to run along tree branches. They can even crawl up house walls and across ceilings. The secret is on the bottom of the gecko’s toes. Atoms on special hairlike structures called setae bond with the atoms of whatever surface this reptileA cold-blooded, air-breathing animal that has a backbone. Reptiles have dry, scaly skin. They move by either creeping on short legs or crawling on their bellies. Most reproduce by laying eggs. is on.
Some speciesA group of individuals that have many of the same characteristics, and are different from all other animals in some important way. Hamsters and mice are two different species of rodent. of geckos are active during the day. Their eyes have round pupils. Geckos that are nocturnalAwake and active during the night, asleep during the day. have strange-looking pupils in photographs. That’s because their pupils squeeze almost completely closed until they look like a vertical line. In the dark, the pupils open wide.
Geckos are believed to be the only lizards that call. Depending on the kind of gecko, the noise might be a squeak, click, croak, hiss, or a “barking roar.” Some speciesA group of individuals that have many of the same characteristics, and are different from all other animals in some important way. Hamsters and mice are two different species of rodent. only make sounds during their mating season. But some types of gecko are noisy fighters over food and/or territory.