or
adder
agile
america
animal
arboreal
arenal
asia
asian
berus
camouflage
captive
central
climber
common
controlled
costa
defensive
display
dweller
eurasia
eurasian
europe
european
fauna
forest
leptophis
life
mexicanus
natural
nature
one
parrot
position
rearfanged
reptile
reptilia
satiny
serpentes
situation
snake
squamata
threat
viper
vipera
viperidae
viperinae
wild
wildlife
zoo