Cottonmouth

Agkistrodon piscivorus

Description 5

VENOMOUS. Keeled scales, broad head with a narrow neck, and vertical slit pupils. Stocky body ranges from black to brown to tan with a distinctive dark horizontal stripe on the side of the head from cheek to eyes. Pattern on the body darkens with age and may disappear entirely. When threatened, will coil its body and open its mouth to show the white inside. Usually 24 to 36 inches (61-91cm). (J. R. Dixon and J. E. Werler, Texas Snakes: A Field Guide, University of Texas Press, 2000.)

Sources and Credits

  1. (c) scott.zona, some rights reserved (CC BY), http://commons.wikimedia.org/wiki/File:Snake_Cottonmouth,_Agkistrodon_piscivorus_by_Scott_Zona.jpg
  2. (c) zanejohnson, some rights reserved (CC BY-NC), http://www.inaturalist.org/photos/1446341
  3. (c) Peter Paplanus, some rights reserved (CC BY), https://www.flickr.com/photos/2ndpeter/17186477932/
  4. (c) tom spinker, some rights reserved (CC BY-NC-ND), http://www.flickr.com/photos/42389547@N00/2613243736
  5. (c) Amber Leung, some rights reserved (CC BY-SA)

More Info

iNat Map

Type venomous
Scales keeled
Defining features horizontal cheek stripe, pit, white mouth display
Colors black, brown, tan
Pupils vertical slit