africa
african
aggression
aggressive
aggressiveness
amphibius
animal
antagonistic
antagonize
behavior
big
danger
dangerous
determination
displaying
dominance
domination
eco system
eco tourism
fat
fighting
grass
green
herbivore
hippo
hippopotamus
huge
large
mammal
mammals
mouth
nature
open
river
skin
south
south africa
southern
thick
tooth
tough
two
unspoiled
water
wide
wild
wilderness
wildlife
wrinkles