英文關鍵字
amphibians
black
coil
constrictor
crawling
creature
descending
droop
drooping
eye
forked
frightened
head
herpetology
hiss
mouth
natrix
nature
nonpoisonous
outdoor
pet
poisonous
predator
reptile
reptilia
reptilian
scaly
serpent
serpentine
sizzle
skin
sliding
slither
slithering
snake
snakeskin
suspended
tongue
venom
venomous
vertebrate
viper
wild
wildlife