Yes, THAT snake is a cottonmouth. The one in the picture that humblegunner posted is a yellow-bellied water snake. Two different snakes. Look at the jawline of each one. Cottonmouth in the video has horizontal lines along its jawline; like a ‘racoon mask’. The snake in the pic in this thread has a yellowish jawline with clear vertical lines. I can tell very clearly which one is which. I’m not trying to be a jerk - I do know the difference between them, and once you learn it, it is very easy.
His belly wasn't yellow though..
Although being the wife of an expert whose website illustrates
different snakes than one it tries to describe obviously qualifies
you to make these definite assertions.
I bow to your obviously superior knowledge.
Meanwhile, my cats remain alive while the snake remains dead.