
Otter
A slippery wrestler who treats rivers like gyms.
Otter vs Crocodile
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. No snacks were harmed.
Otter
Lontra canadensis
River otters can stay underwater about 4 minutes.
Fish, crayfish, frogs — they eat lunch in the pool.
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.
Who do YOU think wins?

Crocodile
A living fossil with a trapdoor mouth.