Scientists are still trying to figure out why ancient lizards evolved into snakes.
Lizards don't really breathe and walk at the same time. Does this mean that dinosaurs couldn't either?
Sorry BUGS, your brain isn't equipped for REM sleep, or any sleep for that matter.
Have you ever heard predictions that one day women will be able to have babies without men?
Think you are pretty good at push-ups? Well, meet the Jacky Dragon.
While some animals developed ways to extract water from their food, the desert dwelling lizards don’t drink water at all; they absorb it through their skin.
Can animals grow infinitely big in the right conditions? Learn more on this Moment of Science.
Where did snakes lose their limbs? Find out on this Moment of Science.
Turn up the heat in the body, and many body processes speed up, including the production of white blood cells and how fast they find infectious bacteria and viruses.
Almost all mammals, in fact, have REM sleep; birds do too, although only in the early parts of their lives. It seems that sleep and REM are required by a particularly complex kind of brain.