英文關鍵字
aggression
aggressive
and
animal
behavior
beset
bird
bread
breed
citrus
compete
creature
crowd
different
disease
eat
environment
farm
feed
flu
fly
food
force
fruits
gluttonous
gluttony
grass
greedily
greedy
green
group
herd
hover
hunger
hungry
kind
life
loaf
moving
natural
nature
outdoor
park
peck
pet
pigeon
poultry
power
rage
speed
starve
starving
swift
vegetables
wild
wildlife