That's only true if you try to kill the reptile before noon.
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Snappers and rattle snakes die/stop moving very slowly.
When I hunted Diamondbacks in FL and TX, I would pop them on the head
with a 1" pvc pipe to knock them out. Put them in a burlap bag and drown
them in the river. They would still be sucking air hours later. This was so
you didn't damage the head so it would be a whole skin lips and all.
Skinning around the fangs always freaked me out. Kinda freaks me right now.
Zuma