英文關鍵字
aggression
aggressive
america
background
bite
brown
carnivore
close
coiled
creature
creepy
crotalus
curled
danger
dangerous
deadly
different
face
fauna
herpetology
lethal
pit
poison
poisonous
prairie
predator
protected
rattle
rattler
ring
rock
scary
serpentine
sliding
slither
snake
snakes
specie
stare
striking
tail
toxin
unique
venom
venomous
viper
woodlands