Actually, that pic is not of a cottonmouth/watermoccasin. It is black, but it is not a moccasin. The moccasin is the most misdiagnosed snake there is. Almost every snake is called a moccasin. I have had three pygmy rattlers in my yard and re-located them all deep into teh woods. I've seen bunches of moccasin in the swamps and ditches out in Point Washington forest, but not in the past few months where it has been plenty hot. They tend to sun in the spring and fall when the nights are cold and days warm.
I concur. He doesn't have the pit viper head. He's just smiling...