africa
african
aggression
aggressive
animal
background
big
creature
danger
dangerous
day
eyes
fight
frighten
group
head
hippo
hippopotamus
immersed
jaws
large
mammal
mouth
nature
open
river
safari
serengeti
standing
submerged
sunken
sunny
swim
swimming
tanzania
teeth
threatened
travel
vertebrate
water
wild
wilderness
wildlife
yawn
yawning