Probably not as sick as Mom. Make a note of it, and if anything turns up in the next few weeks, be sure to mention it to the doctor. There are a few possibilities, but nothing too likely.
Because your cat is trying to empty its digestive system. Another way to empty out stomach. Answer improvement: Dogs and cats will eat grass when their stomach is feeling inflammed and they are...
Well, if the mouse is sick then the pathogens could potentailly invade the kittens mitochondria and stop the production of ATP in the cats cells causing the cat to have pass away violently.
Do you mean, "can your cat get sick from eating an opossum?" If that is what you mean, the answer is sometimes. Eating an opossum isn't different from eating any other kind of animal they might kill...
Most likely, my dogs do. Frogs have a poison that seeps out of their backs...this causes the animal to not eat it, or vomit for awhile. So, if your cat if vomiting after this, its ok. But, if it...