Why does my newborn Manx kitten have a dark sac around its anus?

Yes it is possible that animals are born without an anus or a stricter region. These are called birth defects and usually means there was a problem with development. I would recommend taking the kitten to a veterinarian for an exam to assess what is going on. Hope that helps

He may be constipated or have a partial rectal prolapse. Veterinary attention is recommended to diagnose the underlying cause prior to treatment. Submit a stool sample to diagnose intestinal parasites which are a common cause of the symptoms described, especially in kittens.

There is nothing I would be worried about as the anus seems only mildly inflamed. Usually this is caused by softer feces/diarrhoea. I would recommend to start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice diarrhoea, vomiting, lethargy or inappetence. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further. Please find the time to give us a feedback about the consultation as that will be used to improve our service.

Swelling of the anus/rectum could be due to constipation/hard stools, anal gland issues, allergies, irritation, or other problems. You would need to have the area looked at by your vet to determine what is going on and get the appropriate treatment. Be sure to let your vet known of any other issues you may have seen such as changes in appetite, energy levels, stool habits, etc. You can also use an Elizabethan (cone) collar to prevent your cat from licking/chewing at the affected area if it is bothersome until you can get to your vet.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Poor Nimbus! His anal/perineal area is likely stretched from the pressure of hard stool and straining. It is likely to eventually look normal. But it will take time and there is a slim chance that it will always protrude. As long as he defeates normally without straining if it is permanent then it is likely just cosmetic. I hope this helps and I wish you the best!

Thank you for submitting your question regarding Mr. Whiskers. He does seem to have an abnormality with his anus. He will need to see his veterinarian. He may be constipated and straining to defecate. He could also have intestinal parasites causing him to strain. If the condition is allowed to progress, he develop a prolapsed rectum. This becomes more serious. If his meow has changed, that could be a symptom of an upper respiratory infection. His veterinarian will be able to address both issues. I hope this information helps!

Hmm... from your photo, I can't tell for sure what this might be. You're right that it looks like a piece of litter, but it could also possibly be a piece of fecal material that is still inside the rectum. If Toby is acting normal, I would recommend waiting 24 hours (or until he poops again) to see if it's still there. It may pass on its own the next time he has a bowel movement. If it's still present by this time tomorrow, or if it begins to bleed or show any other signs of a problem, it would be best to have him checked by a vet - he/she can do a rectal exam to palpate the area and get a better idea of what may be going on.