So how do scientists measure the success of an animal's success? Find out on this Moment of Science.
Have you ever wondered why sheepdogs love to herd?
Native American stories and legends depict crows as witty and tricky. Modern behaviorists agree; crows are one of the more intelligent bird species.
Vampire bats, native to Central and South America, are one of the most well known examples of sharing and kindness in the animal kingdom.
Imagine getting a shot everyday that gave you all the nutrients you need for the day so that you no longer need to eat. Would you still have the desire to chew?
It sounds like the begging of a bad joke, but what does a chimpanzee do when it needs to cross the road?
They may not use wall calenders, but apes too have their ways of planning ahead.
Why do frequent workers tolerate these freeloaders? Well, infrequent workers actually do pull their weight, but only when the time is right.
Dog-human attentiveness may mean that dogs make better subjects to study cognitive skills than primates, even chimpanzees, our closest genetic relatives.
I'm not saying dogs weren't intelligent creatures in their distant past, before they were domesticated, but now wolves are much smarter than dogs.