Difference between Water Moccasin and Shieldtail

WATER MOCCASIN vs SHIELDTAIL: NOUN

A water-adder: a name applied with little discrimination in the United States to several species of aquatic snakes; properly, the venomous Toxicophis or Ancistrodon piscivorus, with which the harmless Tropidonotus (or Nerodia) sipedon is sometimes confounded. See water-snake, and cut under moccasin.
Any of various similar but harmless water snakes.
A semiaquatic pit viper (Agkistrodon piscivorus) of lowlands and swampy regions of the southeast United States.
Venomous semiaquatic snake of swamps in southern United States
Any of numerous North American water snakes inhabiting fresh waters

Any species of small burrowing snakes of the family Uropeltidæ, native of Ceylon and Southern Asia. They have a small mouth which can not be dilated.
A snake of the family Uropeltidæ.

A venomous North American snake (Ancistrodon piscivorus) allied to the rattlesnake but destitute of a rattle. It lives in or about pools and ponds, and feeds largely of fishes. Called also water snake, water adder, water viper.

Puff adder, Lizard, Brown recluse spider, Pit viper, Alligator, Western diamondback rattlesnake, Garter snake, Copperhead, Rat snake, Snake, Rattlesnake, Coral snake, Agkistrodon piscivorus, Cottonmouth moccasin, Cottonmouth

Thunderworm, Pygopod, Sheartail, Wormil, Serpentiform, Hoop snake, Snakefly, King snake, Hairtail, Trichiuriform, Grass snake, Emu wren, Urostege, Scincoidian, Taxonomic group

Raccoon, Gaboon viper, Puff adder, Lizard, Brown recluse spider, Pit viper, Alligator, Western diamondback rattlesnake, Garter snake, Copperhead, Rat snake, Snake, Rattlesnake, Coral snake, Cottonmouth

Thunderworm, Pygopod, Sheartail, Wormil, Serpentiform, Hoop snake, Snakefly, King snake, Hairtail, Trichiuriform, Grass snake, Emu wren, Urostege, Scincoidian, Taxonomic group

Copperhead snake bites share symptoms with water moccasin snake bites.
This river is full of wildlife and full of water moccasin.
He felt a sharp pain and waded out of the way of a water moccasin.
Heavy water moccasin and copperhead bites are in the main managed withoutantivenin.
The water moccasin is another type of pit viper.
The picture shows a Cottonmouth snake or Water Moccasin.