So why are snakes bad when God created them and said in Genesis 1:24-5 that they are good?
Also, the creature in Eden was not a snake, actually. It was a serpent and wasn't cursed until it talked Eve into eating the apple.
I really don't like your message that cats and snakes are simply made to be destroyed. They're wonderful animals and you should respect them more. Spiders creep me out, but they don't need to die just to make sure I'm comfortable.