Learning about what helps fish overcome insomnia gives us valuable clues about sleep problems in humans.
A mouse utopia turned into a mouse hell once they had no more space to live – but does that apply to human overcrowding, too?
Birds navigate across swathes of ocean using their sense of smell. Who knew!
At 5 am in a wildlife park, yawning zookeepers are a common sight. Turns out, so are yawning elephants.