Does anyone have any experience with this? This rescue dog that my sister took in about a month ago has developed this problem. I have already spoke with our Vet and he said that it's somewhat rare but it can happen when the female comes into heat. He said she needs to be spayed to correct/fix it. He is scheduled out a bit for spays so we wouldnt eb able to get her into him right away. He said to keep a watch on it and she should be fine but DO NOT let her get bred as it will worsen the prolapse and it could kill her if she had pups. she is a very young dog, only about 9 months old & a petite little pit mix. She had to talk to her boyfriend tonight but I told my sister to contact our other Vet tomorrow morning and see what they have to say also, they should be able to spay her right away too. I just want any other info if anyone else out there has dealt with this before. Also, it's still internally prolapsed.