My cat has plastic coming out of her rear. Should I pull it?

As long as she is comfortable and has no pain or discomfort eating or breathing I would watch and wait, monitoring closely for any signs or symptoms of GI upset or obstruction. Most small pieces of soft plastic will be vomited or passed uneentfully; small frequent meals can encourage bowel movement and the addition of some laxative hairball paste may help also

If you did not pull hard you could not have injured her, even if the resistance you felt was deep in the intestines. obviously it's great that it came out but you need to keep an eye on it in the next few days to make sure everything came out indeed.

I can certainly understand being worried about your cat eating plastic! The problem with plastic is that is can get caught in the GI tract, causing an obstruction. The best thing to do is to take him into a vet on call or an ER vet to get a shot to induce vomiting now. That will get the plastic out of him, and prevent any chance of obstruction. If it did cause an obstruction, he would need surgery to remove it, so it's better to avoid a big surgery bill now by having him induced to vomit to remove it. There is a chance it could pass on it's own, and you can chose to monitor him over the next 72 hours. Signs of obstruction including vomiting, diarrhea, anorexia, lethargy, and constipation, and should you see any of those signs, he would need to see a vet immediately. In my opinion, it's best to be safe, so I would recommend taking him into a vet now.

A small piece should be able to pass sometime in the next 12-36 hours. Monitor for lethargy, vomiting, diarrhea, loss of appetite or abdominal pain. These are symptoms that should be addressed by your veterinarian.

No, I would not attempt to remove a potential foreign body on your own as it could cause tearing or internal injury. It is best to seek care immediately from your vet or an emergency clinic so they can safely sedate and remove the item.

No, do not attempt to pull it out. It could be a mass or a vaginal prolapse. Either condition needs to be addressed by your veterinarian. If she allows, get her into a carrier and take her to your veterinarian or the nearest veterinary ER. Left untreated, she is at risk of serious infection.

I am not quite sure what she may have thrown up in the picture. It looks like it could be rice or even intestinal parasites. Since she is still vomiting parts of the plastic bag, I would be concerned that there may have been something missed during surgery. If she shredded the bag, there could be tiny pieces in her stomach and/or small intestines that would never be felt when look at these organs during exploratory surgery. She may need additional treatment to help these pass, including IV fluids, anti-nausea medications, enemas, or medications to help stimulate her intestines to move.