🔬🐍📈

#vipera berus #scientific name #vipera #berus #adder species #snake pattern #zig-zag graph

🌲🐍☠️

#vipera berus #common adder #venomous snake #woodland snake #european viper #forest viper

🐍🏞️❄️

#vipera berus #adder #common viper #cold climate snake #heathland snake #moorland snake #northern viper