My little Bomei also has rectal prolapse! I didn't know at first, but I thought it was inflammation, which dragged on for a few days. Later, I learned that it was rectocele.
The treatment is actually very simple. The sooner you find it, the sooner you treat it. Send it to the pet hospital and let the doctor put the intestines back into the anus. Then sew two stitches on the anus! Horizontal seam, like a word!
You can also try to stuff your intestines back! As long as it doesn't fall out, you don't have to send it to the pet hospital! Pay attention to disinfection to prevent infection! If you put it back and fall out, there is nothing you can do. You have to go to the hospital to sew! My little Bomei just finished it the day before yesterday. 50 yuan. You can refer to it Much better now! The doctor said that as long as it doesn't fall out again, it can be taken out in a week or so!
Your puppy is seven or eight centimeters long. You can try to block a wall, but don't delay, the more serious the better! If the exposed intestines are necrotic, it will be really troublesome!
I wish your puppy a speedy recovery!