The pygmy hippopotamus, now 6 months old, is Thailand’s biggest celebrity, and the crowds keep flocking. What explains her charm?

Watch the Video Click here to watch on YouTube Besides elephants and rhinoceroses, hippopotamuses are the largest living land ...

A small shark swimming around a Louisiana aquarium holds a mystery in its DNA. Yoko the swell shark hatched from an egg that was discovered in a puzzling place — an all-female tank, the Shreveport ...

Thanks to social media, people around the world have fallen in love with Fiona and Fritz at the Cincinnati Zoo and the ...