
Hippo
A floating boulder with kitchen-knife tusks.
Hippo vs Otter
Tonight's science rumble is set in the empty savanna exhibit after closing time. No snacks were harmed.
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.
Otter
Lontra canadensis
River otters can stay underwater about 4 minutes.
Fish, crayfish, frogs — they eat lunch in the pool.
Who do YOU think wins?

Otter
A slippery wrestler who treats rivers like gyms.