Nope, but follow the link for more information on their diet.
How far can a snapping turtle stretch it's neck?
I don't know about full grown snapping turles but I know that baby snapping turtles, they can stetch their necks about 1inch out of its shell
What happens to a snapping turtle if they go in salt water?
If snapping turtles have salt the tongue of the snapping turtle will dry out and the turtle will have no interest to eat.
Do snapping turtles bite people?
they have bitten people, but they bite whatever they feel is a threat to them.
It's for self defense, not because we look tasty
Yes, I'm sorry, but indeed they do eat turtles, especially the young, when their shells are still soft.