
Otter
A slippery wrestler who treats rivers like gyms.
Otter vs Hippo
Tonight's science rumble is set in the empty savanna exhibit after closing time. No snacks were harmed.
Otter
Lontra canadensis
River otters can stay underwater about 4 minutes.
Fish, crayfish, frogs — they eat lunch in the pool.
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.