Our presence could be causing the brains of non-human animals to grow.
The common gray squirrel - with its exceptional mental and physical agility - is making biologists look twice.
On the American plains, squirrels are the food of choice for both the coyote and the badger.
Do you believe Big Foot exists? If Big Foot exists, then why doesn’t anyone have genuine proof? How could a creature so big manage to hide so well that humans can’t get a good glimpse of it, much less study it and classify it? Well, just that does happen frequently in nature.
How do squirrels react to predatory snakes? Find out on this Moment of Science.