英文關鍵字
aggressive
animal
animals
ape
apes
asia
asian
behavior
behaviors
black
cheeked
couple
critical
critically
each
endangered
exotic
female
fight
fighting
forest
gibbon
gibbons
gold
laos
leucogenys
male
mammal
mammals
monkey
monkeys
nomascus
northern
other
pair
pet
pets
play
playful
playing
primate
primates
social
specie
species
threatened
tropical
vietnam
way
white
zoo
zoology