For years, scientists have been trying to figure out the nature of the relationship between cleaner fish and their clients.
Do animals come into the world tabula rasa and only learn things from experience? Or do we emerge with some knowledge already hardwired?
We talk to our house pets all the time, but wouldn't it be great if your cat could answer you in English?
Ever been so scared that you can't move? Well freezing is actually an effective defense mechanism!
Do cats' movements when they play with toys reflect how they would hunt in the wild?
Have you heard the story about how one monkey on an island figured out how to wash his food, and then other monkeys starting doing it too?
Did you know that octopuses have even been seen engaging in play behavior?
Female lemurs on contraceptives smell different to potential mates than ones that are not.
The common gray squirrel - with its exceptional mental and physical agility - is making biologists look twice.
Fireflies can put on quite a dazzling display. However, it is not us that they are trying to impress.