How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: the lines that eventually give rise to segments, organs, or markings like ...

A Nile crocodile. Leigh Bedford via Wikimedia Commons under CC BY 2.0 We commonly refer to scaly, itchy skin rashes as “crocodile skin.” Scientists, however, have just proven that real crocodile ...

In many animals, skin colors and patterns play an essential role, whether for camouflage, communication, or thermoregulation. In corn snakes, some lineages display red, yellow, or pink hues, and their ...