Koalas are often regarded as cute but dumb: slow, sleepy and incapable of change. But they have been known to approach humans for help. And maybe they have been set free by their remarkable diet.
The cetacean brain has a specialised thermogenic system that helps the animal’s brain to produce enough heat to maintain a functional brain temperature.
A shift in climate, along with other environmental disruptions and the invasion of competitors and new predators all likely played an important role in reshaping ancient elephants’ brains.