adder
animal
background
beautiful
berus
black
close up
closeup
colorful
common
creature
danger
dangerous
deadly
detail
endangered
eurasian
european
fauna
frightening
head
herp
herpetology
macro
melanistic
natural
nature
outdoor
poison
poisonous
portrait
predator
ready to strike
reptile
scales
science
single
snake
species
squamata
toxic
venom
venomous
viper
vipera
viperidae
viperinae
wild
wildlife