The flight service station where I worked was next door to Customs. They used to confiscate those snake bottles every once in a while,(huge fine) it is illegal in Canada to have posession of a Cobra in any form. They are on the banned species list.
I don't know if the same law applies to the United States.

Some Cobra even came in Whiskey and Tequilla Bottles.
Sea Turtle shells, Ivory, Eagles, Elephant feet and you name it they will try to smuggle it.

The local office once intercepted a complete untanned illegal tiger skin. Now that was a huge huge fine.
Cobra are endangered in some of their ranges.
Our local rattlesnakes are protected but people still kill them on sight. Snakes do not have good press it would seem.