
Hippo
A floating boulder with kitchen-knife tusks.
Hippo vs Giraffe
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. 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.
Giraffe
Giraffa camelopardalis
A giraffe's tongue can be 45 cm long and is often purple-black.
Giraffes nibble acacia leaves, tongues and all. Thorns? Merely crunchy.
Who do YOU think wins?

Giraffe
A living watchtower with a killer kick.