英文關鍵字
adder
animal
arietans
background
bitis
bothrops
camouflage
close
closeup
dangerous
deadly
defend
defensive
eyes
flicking
head
jungle
mouth
natural
nature
nocturnal
poison
poisonous
predator
puff
reptile
reptilian
scaly
serpent
skin
slither
snake
tongue
toungue
tropical
venom
venomous
viper