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 hazardous head herpetology natural nature perilous poison poisonous position predator reptile safety sand scales serpent sign snake stone symbol tongue triangle viper vipera warning warningsign warningtriangle well wild wildlife zoology