I've never heard of diagnosing an RI by poop colour.

One learns daily if one is not careful.

Have you ever watched any of the crots? The pit vipers? Those native to the Americas in particular?

I'd be willing to wager you haven't.

Take a look at a few, and that's just one genre, and then tell me if you still want to hold with your tongue flicking theory.

It's not 100%.