There's no way I could feed a cat to a snake.. and in my opinion I would call it wrong for anyone to. Although that's only my view. It is a good question, what makes a cat's life any more valuable that a rodent's? I don't know. But I believe that things like cats and dogs are meant as companions. I understand that people have rodents as pets and sometimes bond with them more than they would a dog or cat, but it's still just different. I feel omnivorous prey items like rats are supposed to be targeted and eaten by predators, but feeding an obligate carnivore to an obligate carnivore sounds wrong to me..