adder
aggressive
angry
animal
asp
aspis
attack
autumn
background
big
biology
black
closeup
danger
dangerous
endangered
eye
eyes
face
grass
head
indigo
lethal
macro
nature
poison
poisonous
portrait
predator
protected
racer
reptile
reptilian
scales
scary
serpent
snake
species
tree
venom
venomous
viper
vipera
warning
white
wild
wildlife
yellow
young