If you were gonna stop and snap pics, why not actually get its head in the shot for identification?
"Hey guys, I just had lunch with one of the Playboy Playmates from last year - here's a pic of her coat hanging on the wall - you can kinda see her elbow in background.."
But surely then we could use the elbow's pointiness to match it to its owner.
Based on the pictures provided, I'd say it's a garter snake, grass snake, rat snake, rattlesnake, inland taipan, black mamba, racer, or who knows what else. Not a whole lot to go on there.
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Probably just a garter snake though. The worst it'll do is try to bite if you really persistently attempt to piss it off; there's no venom though. Besides that, if picked up, they'll immediately squirt out a lovely mixture of musky feces all over you, and then squirm to really spread it around. No need to kill them though.
A venomous snake...I might consider it, but probably wouldn't. Most snakes will try to hide or escape rather than bite.
Now, an inland taipan or black mamba, I think I would try to kill one of them. Or run away. Running away
would probably be the best option.
Inland taipan: Lives in Australia, and has very toxic venom. Black mamba: Lives in Africa, has pretty toxic venom,
and it's got a serious attitude problem - they might try to chase you down if you're in their territory. Those two specimens should
not be roaming around North America, especially without a leash.