I would freak out if I saw snakes that big, let alone a rattlesnake....
I was reading an old favorite -- Lad: A Dog by Albert Payson Terhune -- with my kids, and there is a chapter in which Lad is bitten by a rattle snake while protecting a disabled child. I know how it ends but this chapter always makes me cry. The story is set in northern NJ. Happily, some of Terhune's stories are available on-line from Project Gutenberg and Librivox.