“God created predators, including those such as cats that are obligate carnivores, with their digestive systems unable to digest anything but meat effectively.”
Tell us, how many fossilized cat digestive systems have you examined?
What was the purpose of a cat before it was a predator?
Did the entire class of predators come into existence when Adam sinned?
But, sorry, the notion that snake venom and the entire system to deliver it, along with the instinct to use it and to be a predator came into existence when Adam ate the fruit is just plain silly.
This type of stuff makes anybody who believes in God or Creation look really, really stupid, IMO.
YMMV