africa
african
aggression
aggressive
amphibious
animal
animals
beast
big
body
botswana
close
danger
dangerous
display
displaying
ears
environment
fat
grass
herbivore
hippo
hippopotamus
hippos
huge
lake
large
male
mammal
mouth
national
natural
nature
open
outdoor
river
safari
spring
teeth
water
wide
wild
wilderness
wildlife
yawn
young