英文關鍵字
adult
african
agriculture
animal
brown
burro
calm
cattle
close
closeup
countryside
cute
domesticated
donkey
dumb
dun
ear
face
farm
farming
fence
grass
grey
head
headstrong
mammal
meadow
mouth
mule
mulish
nature
neddy
nose
outdoors
paddock
pet
poor
portrait
ranch
rural
single
small
summer
unhappy
vertebrate