Some are (on top, anyway), some aren't. There aren't many other big black snakes in North America. They also have that big triangular viper head and that bright white mouth I hear they like to flash at you as a warning before they strike. (I've never lived in a cottonmouth area, so I don't have any personal experience with them.)
Comments
Aren't cottonmouths just a non-descript black color?
Some are (on top, anyway), some aren't. There aren't many other big black snakes in North America. They also have that big triangular viper head and that bright white mouth I hear they like to flash at you as a warning before they strike. (I've never lived in a cottonmouth area, so I don't have any personal experience with them.)