viper is ordinary. snake on the road. the snake crawls along the ground with rocks.

adder animal asp attack background basking black camouflage cerastes close color common crawl danger dangerous deadly europe european eye grass head herpetology natural nature perilous poison poisonous position predator rattlesnake reptile safety scary serpent sign snake symbol tongue toxic triangle up venom venomous viper vipersnake warning water wild wildlife zoology