adder
animal
basking
beautiful
berus
biodiversity
brown
closeup
common viper
creature
danger
dangerous
deadly
detail
endangered
fauna
fear
fearsome
frightening
full length
gray
habitat
herpetology
macro
male
poikilothermic
poison
poisonous
portrait
predator
reptile
reptilian
scales
scary
snake
toxic
venom
venomous
vertebrate
viper
vipera
vipera berus
viperidae
viperinae
wild
wildanimal
wildlife
zigzag
zoology