adder
aggressive
ancient
animal
animals
attack
background
biology
black
color
danger
dangerous
death
emotion
expression
eye
green
herpetology
killing
life
looking
medicine
menace
menacing
nature
nobody
one
pain
poison
poisonous
portrait
pose
posing
reptile
reptiles
serious
skin
snake
sting
strike
surveillance
swamp
throw
venomous
vertical
viper
wild
wildlife
zoology