And other even more venomous ones?
The bloke assures me you need a licence for them. Oh that's ok then. 
I asked if our local hospital stocks anti venom. It doesn't. The nearest hospital that does is 4 miles away. He reckons you'd be ambucoptered over there and would make it if the rattlesnake bit you. The other one he reckons you'd be dead before the helicopter got you there.
So anyone can get a licence and then keep one. Which is fine until it escapes.