The cold blooded crocodile has the most sophisticated heart in the animal kingdom. It has an extra aorta which means it can control where blood flows around its body. When submerged, oxygen rich ...

But the crocodile uses its heart to do something a little more unexpected ... delivering oxygen to cells all over the body. After the blood has dropped off its oxygen, it picks up carbon dioxide ...

The remains of an Australian man who vanished while fishing with friends have been found inside a crocodile ... two large crocodiles and found human body parts. Police said it was a "tragic ...