Why aren’t pterosaurs classed as dinosaurs?

Bones create an internal armature that on some animals, such as an elephant or cow, appear quite stiff and rigid, but on others, such as the cheetah, they are gracile, loose and flexible, allowing for

Discover the remarkable resilience of Earth’s oldest and hardiest animals, overcoming mass extinctions and conquering the planet’s ever-changing climate

The white-tailed eagle, the UK’s largest bird of prey, was brought back from extinction – and it all started with an ambitious project on a mountainous Scottish island, half a century ago...

This month’s challenge is all about the identification of long-legged birds

Birds of prey in flight have a reputation for being very tough to identify. However, follow these guidelines and you have a good chance of telling these five larger species apart. Note photos are not to scale.

PORTRAIT BY VANESSA DELL; YOUGOV/SEX MATTERS A decade ...