It's not a flattering likeness, but rats and humans actually have a lot in common, including physiology.
You probably already know that humans are warm-blooded, while creatures like snakes are cold-blooded. Scientists prefer the terms endothermic and ectothermic.
Why are diseases like cancer so common in humans but so rare in chimps?
Humans yawn when sleepy to stay alert. But imagine yawning when you're already stimulated.
Want to improve your groove when it comes to the Funky Chicken or the Electric Slide? Maybe you could take a lesson from the birds.
Learn about the many animals that have mastered food caching!
One theory as to why humans began walking upright notes that when our species was just getting its start, the ability to reach up for fruit was beneficial.
Humans are more highly "evolved" than chimps, right?
Scientists have been experimenting with ways to tackle problems like the muscle loss that occurs with aging. Learn more on this Moment of Science.
Why do horses have skinny legs? Find out on this Moment of Science.