Originally Posted by DesertJewel
Well, I know that cats are immune to all diseases that mice carry.
Do you know rodents in some areas do have fleas with bubonic plague and there's still outbreaks of it? Including house cats that catch it and the fleas. (which is one reason why it's so bad to have mice and rats infesting one's home). And nothing is immune to worms. Some types of worms don't do so well in certain animals (heart worms in humans, for example) but that doesn't mean the animal is immune. Rodents infecting cats is actually a very common step in the worm's life cycle.
In some areas cats can even pick up flukes from prey animals (such as lizards). When those infest a cat it can mimic pancreatitis.
Here you go http://www.marvistavet.net/html/body...__kittens.html
Feel free (to anyone reading) to look up various parasites life cycles! You might be a bit disturbed as to what has life cycles in livestock and fish.