
Crocodile
A living fossil with a trapdoor mouth.
Crocodile vs Hippo
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. No snacks were harmed.
Crocodile
Crocodylus niloticus
Crocodiles have been around since the time of dinosaurs.
Fish, mammals, birds — if it comes to the water's edge, it is on the menu.
Hippo
Hippopotamus amphibius
Hippo sweat looks reddish. People called it blood-sweat. It is really a natural sunscreen.
Hippos graze grass at night. By day they soak and... argue.
Who do YOU think wins?

Hippo
A floating boulder with kitchen-knife tusks.