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

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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Why Does My Cat Have Whiskers on Their Eyebrows? Vet-Verified Facts & Functions

Though whiskers above the mouth are a standout feature in cat anatomy, whiskers in other areas are less conspicuous. In addition to the...

How to Cat Proof a TV: 9 Vet-Approved Tips & Tricks

When you think about it, cats and humans have quite a lot in common. For starters, both cats and humans love taking long...

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...

Black Scottish Fold Cat: Info, Pictures, Facts & History

The Black Scottish Fold is a gentle, curious, short-haired cat breed known for its distinctive looks, including big eyes and dainty folded ears....

More related

Can Cats Eat Ham? Vet-Approved Health Benefits & FAQ

Since felines are obligate carnivores, their diet primarily consists of meat. They require certain essential nutrients that can only be found in animal...

Why Does My Cat Have Diarrhea All of a Sudden? 6 Vet-Reviewed Reasons

When you’re a cat parent, you know that there will be one or two icky messes to clean up. Occasionally, these messes are...

Can Cats Eat Poppy Seeds? Vet-Reviewed Risks & Precautions

While cats can be finicky eaters, sometimes they surprise us and gobble up things that aren’t a typical part of their diet. For...

Cat Hierarchies & Social Structures: Based on Science

If you live in a multi-cat household, you might have noticed that some of your cats get along better with each other than...

Keep reading

How to Tell If My Cat Has Ear Mites: 5 Vet-Reviewed Signs To Look For

Ear mites are small parasitic creatures that can cause significant damage to cats’ ears. Left untreated, ear mites can lead to a serious infection and even deafness in cats. If you suspect that your cat has ear mites, take them...

kitten with ear mites

Do Cats Hiss When They Play Or Are They Fighting? Feline Behaviour Explained (Vet-Verified)

One of the challenges of living with cats is understanding their behavior. While they can’t verbally tell us how they’re feeling, they are constantly communicating with us through their sounds and body language. Among their vocal repertoire, hissing is one...

cat meowing

Can Cats Eat Yams? Vet-Approved Nutrition Facts

Yams are a big part of meals in autumn and winter. As you prepare for holiday dishes, you may be wondering if you can share some of your yams with your cat. Or, if your cat likes to sample food...

Can Cats Eat Yams

How Do You Determine a Cat’s Sex? A Vet-Approved Guide

Determining the sex of your cat can be confusing, especially if they are a kitten or are still young, as it is not always obvious. Given that male cats do not have visible testicles until they are approximately 6–10 weeks...

Thai Siamese point cat, with blue eyes, lying on the couch

What to Do with a Stray Cat That Won’t Leave? Vet-Approved Tips & Tricks

If you have a stray cat outside your home, you should first assess the animal’s condition. What you should do with a healthy cat is much different from what you should do with one that needs medical attention. Provide food...

Stray cats eating on the street

Wet vs. Dry Cat Food: Vet-Approved Facts & Key Differences

When it comes to choosing between dry cat food and wet cat food, the decision can get confusing on which one you should select. Is dry cat food the better option, or should you choose wet food for the moisture...

Wet VS dry cat food

National Cat Health Month 2026: How & When Is It Celebrated?

Cat parents and enthusiasts can now dedicate a whole month of the year to felines! Our cat’s health is important; sometimes, we need extra motivation to focus on their physical and emotional health. National Cat Health Month reminds us how...

woman kissing her cat

How to Cut Pills Easily & Accurately for Your Cat: Vet-Verified Tips

If you’ve ever given a pill to your cat, you know how challenging it can be. There are several reasons you may want to cut a pill for a cat. It may be easier to get your cat to take...

young woman giving cat a tablet pill

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.