英文關鍵字
america
american
animal
autumn
bison
bonasus
bovinae
brown
buffalo
bull
cattle
cow
dangerous
domestic
eat
eating
european
farm
fauna
field
forest
fur
grass
grassland
grazing
habitat
herbivore
herd
horned
horns
male
mammal
montana
national
natural
nature
outdoors
park
pasture
prairie
safari
summer
usa
valley
wild
wildlife
wisent
wyoming
yellowstone
zubr