Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat’s Butt Bleeding? Our Vet Explains Causes & Treatments

Share

Checkup and treatment of kitten by a doctor at a vet

Your loveable feline friend was curled up on your pillow with you. They got up and left a surprise: blood-tinged fluid on the pillowcase. You know your cat is fixed, so that’s not it. Why is your cat’s butt bleeding?

Let’s take a look at some of the reasons and treatment options.

If your cat’s rectal area is bleeding, it’s essential to have your kitty evaluated by a veterinarian as soon as possible. Your vet will need to determine if the bleeding is coming from the skin around the rectum, rectal tissue, the anal sacs, or something internal.

divider 1 paws

The 5 Possible Causes for a Cat’s Butt to Bleed

1. Anal Sac Disease

Your cat has scent glands located in the rectum called the anal glands or anal sacs. These glands fill up with pungent material that cats usually express as they defecate. For different reasons, the anal sacs can fill up and become inflamed or infected.

Sometimes, the anal sacs will rupture, leading to a bloody discharge. You might see a visible hole when you lift up your cat’s tail on one of the sides of the rectum.

anal sacs (glands) of a cat
You are free to use this image but we do require you to link back to Catster.com for credit
Treatment
If your vet determines your cat has an anal gland abscess or anal sacculitis, the vet will likely put your cat on antibiotics and an anti-inflammatory pain reliever.

Commonly used antibiotics include:

  • Injectable Convenia
  • Oral Clavamox
  • Oral clindamycin

In severe cases, cats need their anal sacs flushed and infused with medication. Your cat could also need surgery to remove the affected anal sacs.


2. Trauma

Traumatic injuries to the rectal tissue can contribute to blood around the rectum. Cats can get scratches or bite wounds around the rectum. Foreign body injuries, such as punctured intestines or trauma to the colon, can occur secondary to eating bones and other materials.

An injury from being hit by a car can also cause rectal bleeding in your cat. If you suspect an injury, call the veterinarian immediately.

vet examining the sick cat with stethoscope
Image Credit: 4 PM production, Shutterstock
Treatment

Treatment for rectal trauma will depend on what happened and where. Depending on the injury, some cats will need surgery, and others will require antibiotics and pain medication. Your cat may also need to be on stool softeners to help them defecate without putting much pressure on the tear site.


3. Rectal Prolapse

Some cats experience a rectal prolapse when a portion of the rectal tissue comes out of the anus. It is most common in younger cats with severe diarrhea, such as kittens with intestinal parasites.

Treatment

Rectal prolapses should be treated immediately as the external tissue can dry out, lose its blood supply, and become necrotic. Your veterinarian will need to anesthetize your cat and replace the tissue.

They’ll then use a purse-string suture pattern to partially close the anal opening and help minimize the chances of a subsequent prolapse. If your cat has necrotic, unviable tissue, it must be surgically removed.


4. Tumors or Polyps

According to the Merck Veterinary Manual, rectal polyps are uncommon in cats. If they occur, they’re usually benign. Tumors or widespread cancer can occur within the anal tissues. Some cats develop anal gland tumors that can become large and block their anal opening.

Lymphosarcoma is typically a metastatic cancer that can spread mainly through the lymphatic tissue found throughout the body, including the intestines.

Treatment

Surgical removal is the best treatment for localized polyps so that they can be submitted for histopathology and analyzed to ensure they’re benign. Some other tumors in your cat’s rectum can be surgically removed. A biopsy might be necessary to characterize a tumor and help predict its behavior and best course of treatment.

Chemotherapy is useful for some cancers, such as lymphosarcoma or lymphoma. Your veterinarian might refer you to an oncologist for further treatment.

Veterinary clinic examining a radiograph of a Persian cat
Image Credit: 135pixels, Shutterstock

5. Parasites

Parasites can also cause bleeding around your cat’s rear end. First and foremost, fleas can make cats so itchy that they scratch until they bleed, often around the tail. Intestinal parasites, such as hookworms, tapeworms, and roundworms, can cause intestinal upset and diarrhea.

Combined with that, or even with just the parasites, your cat may have blood in their stool called hematochezia.

Treatment

Treatment for parasites involves determining the type of parasites. Fleas are treated with flea prevention products like Revolution. Intestinal parasites can be treated with pyrantel, praziquantel, or other medications, depending on the parasites noted in history or fecal floatation.

divider 1 paws

Frequently Asked Questions

How Do You Tell if a Cat Has Worms?

You might see intestinal parasites in your cat’s stool. Roundworms typically resemble spaghetti noodles, while tapeworm segments resemble grains of rice. Cats with parasites often have diarrhea, and some kitties will also vomit.

They sometimes even vomit up worms. Some affected cats will also lose weight and might have dull coats.

veterinarians-hand-strokes-a-sick-cat
Image Credit: Zhuravlev Andrey, Shutterstock

Can Cats Bleed From Straining to Defecate?

If your cat is constipated and straining very hard to defecate, they could start to pass a little blood. Your veterinarian will likely want radiographs (X-rays) to confirm this. They might give your cat an enema and place them on a stool softener. Some foods, such as a fiber-response diet, may also help.

divider 3 paws

Conclusion

If your cat starts to have blood around their rectal area, contact your veterinarian. If your cat is actively bleeding, it is a medical emergency. Your veterinarian will perform an exam to try and narrow down the possible causes and develop a treatment plan to help your cat and alleviate your worry.


Featured Image Credit: Hanna Taniukevich, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

2 Responses

  1. 9 week old feral kitten sore eyes treated with otc eye drops, sneezing cough med, encouraged kitten food warm kitten powder milk in warm boiled water few days. 5 kittens in cat house with heat pad and heat lamp very cozy come and go at will play on porch and sunny side. This one I noted trotted off down steps and pooped back up and zi noted bloody butt. A couple were sick but with regemin are better and playing but not this one slept most day. I have done nothing but watch this one. resp are normal. Ialso gave it amoxicillin today which is otc for fish. what else can I do. it did eat once today and drink water couple times. mom is only feeding certain ones for over a week but not thus one. help

    1. It sounds like you have a truly compassionate heart, Peggy, but the kitten showing signs of illness is in urgent need of veterinary medical care. Using unprescribed treatments, especially antibiotics, can be very dangerous for kittens. This kitten needs an urgent diagnosis and safe treatment plan. We strongly recommend you bring it to a veterinarian as soon as possible.

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Importance of Spaying/Neutering, Cat Retail Shopping Ban & Red-Level Storms | Chatty Cattys, Episode 30

In this episode of Catster’s Chatty Cattys podcast, Nicole and Dr. Karyn are celebrating a major legal win for pets before diving into...

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

More related

We Interview Hank, the Cat Who Ran for U.S. Senate

Occasionally narcissistic and extremely skilled at getting what they want, cats would make excellent politicians. Hank, a handsome brown tabby from Virginia, took...

Is My White Cat, Clutch, Deaf? Explaining Feline Genetics & Hearing Impairment

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

When Can Kittens Leave Their Mom? Vet-Verified Facts & FAQ

Kittens are born helpless and blind—dependent on mom to get them through life. After the first several weeks, mom and onlookers alike will...

European Shorthair Cat Breed Info: Pictures, Temperament & Traits

In Europe, the European Shorthair cat is widely considered to be the most popular breed of housecat. They have lively personalities brimming with...

Keep reading

What to Feed a Cat That’s Vomiting: Foods to Help Care for Your Kitty

When your cat is sick, the last thing you want is to feed them something that will make it worse. But how do you treat a cat that’s still vomiting, and what should you do to calm their stomach? It...

What to Feed a Cat That's Vomiting

Why Is My Cat in Heat So Much? Vet Approved Facts & FAQ

If this is your first time living with a queen, or a non-spayed cat, it might surprise you how often they go into heat. How much is normal, and when should you worry? We break down everything for you here....

cat in heat

Does Rain Kill Fleas? Vet Reviewed Effectiveness & Safety Explained

If your cat has ever had fleas, you’ll know what a pain it is to get rid of them. Trying to find the right method to get rid of fleas while avoiding poisonous pesticides is no joke! And if it’s...

cat in the window watching the rain

PawTree Tear & Saliva Stain Remover Chews Review 2026: A Detailed Look

Just about every owner of a light-colored dog or cat knows the struggle with tear stains is real. Often, switching to a higher-quality diet can do wonders to stop tear stains in their tracks. But for some pets, even the...

PawTree Pet Supplement

Why Do Cats Roll Around in the Litter Box? 4 Vet-Approved Reasons & Tips

As humans, we don’t consider rolling on the bathroom floor something we want to do. Therefore, when our cats decide to roll around in the litter box, it can strike us as pretty revolting. However, there are several reasons why...

cat lying on litter tray

Why Are My Cat’s Paws Swollen? 5 Vet-Reviewed Causes & Signs

As a pet parent, you’re always doing your best to ensure your cat is loved and healthy. That’s why you get so concerned when your cat’s paws are swollen or they come home limping. There are a few reasons swollen...

close up of cat paws

5 Amazing DIY Cat Diapers You Can Create at Home (With Pictures)

If you are a cat lover, then you know that sometimes they have accidents. When this happens, it is important to have a plan in place to deal with the mess. One option is to use cat diapers. Cat diapers...

cat wearing diaper

Is Cat Water Additive a Good Idea? Vet Approved Pros & Cons

Dental hygiene plays an important role in a cat’s overall health. It’s essential to develop a dental hygiene regime to ensure the teeth and gums stay healthy in order to prevent other medical problems occurring down the road, such as...

hepper nom nom cat food bowl water

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.