If you kill a rattlesnake in AZ, you face major fines, and possible jail time. And, if I had tried to kill it, (with my luck), it’s head would have swung around and it’s fangs would have gone right into my flesh.
IOW, let the ‘authorities’ deal with it. I have had to call 911 several times over the past 15 years - to remove rattlers from my property. But, never before or again, one that big.
Are you serious??? Are they endangered in Arizona? Rattlesnakes are everywhere in dry, desert areas. Who would have thought they would be on an endangered list?