Red-tailed Pipe Snake, Cylindrophis ruffus, rested on a wooden floor and looped in a figure of eight knot undoing itself and moving out of the frame

common pipe snake redtailed pipe snake cylindrophis ruffus nonvenomous cylindrophis snakes in thailand cylindrophiidae nonvenomous snakes animals with scales red cylinder snake slithering snake nocturnal snakes reptiles in thailand slither slithering animals snakes in asia harmless snakes herpetology slithering movement serpentes scaled animals reptiles in asia wildlife in thailand snake breathing wildlife in asia twisting movement animals in thailand snakes herping legless animals nature in thailand twisting reptiles scales animals in asia wildlife vertebrates herp herper oscillating motion wild animals animals harmless legless nature zoology nocturnal surinami nocturnal animals