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

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