What’s the race of a rattlesnake and a cottonmouth?
Cottonmouth is what you wake up with after a night of drinking alcohol, water moccasin is the snake that exposes its white mouth when threatened and it will shake its rattle less tail if you stay around long enough to notice such things. I once watched a WM eat a frog and when the frog was half way down the hatch head first I thought the snake in a safe state so I picked it up and that moccasin spit that frog out like a bullet and was ready to bite me when I dropped it.
The frog was so grateful it granted me three wishes. My first wish was for a clean pair of underwear. The other two wishes were inconsequential.
Lesson: a water moccasin with a frog in its mouth is still loaded. They are like guns. All guns are loaded.