Updated September 25, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Quick answer: Dogs very rarely get true hemorrhoids, the swollen veins that are common in people. When a dog has a sore, swollen, or bleeding bottom, it’s usually something else: anal sac problems, a perianal tumor, perianal fistulas, rectal prolapse, parasites, or irritation from diarrhea. Each needs different treatment, so it’s worth a vet visit. Don’t use human hemorrhoid creams on your dog.
Why dogs don’t get hemorrhoids like people
In people, hemorrhoids are linked to upright posture and straining. A dog’s horizontal body puts less pressure on the veins around the anus, so true hemorrhoids are very uncommon. That’s why a lump or swelling near your dog’s anus deserves a proper diagnosis.
Common causes of “hemorrhoid-like” symptoms
- Anal sac disease: the two scent glands beside the anus can become impacted, infected, or abscessed. Signs include scooting, licking, a fishy smell, and swelling to one side of the anus. An abscess can burst and bleed.
- Perianal adenomas: benign tumors around the anus, most common in older, unneutered male dogs.
- Anal sac adenocarcinoma: a malignant tumor that can feel like a firm lump near the anus and sometimes raises calcium levels.
- Perianal fistulas: painful draining tracts around the anus, most common in German Shepherds.
- Rectal prolapse: red, tube-shaped tissue sticking out of the anus, usually after heavy straining. This is an emergency.
- Diarrhea, constipation, or parasites that irritate the area and may cause bright red blood on the stool.
When to see a vet
Go to a vet the same day for rectal prolapse, heavy bleeding, a burst abscess, severe pain, or straining without passing stool. Book a visit for:
- Any lump or swelling near the anus
- Scooting or licking that lasts more than a day or two
- Blood on or in the stool that happens more than once
- Pain when sitting, or reluctance to poop
How vets diagnose it
Your vet will examine the area and usually do a rectal exam to check the anal sacs and feel for masses. They may take a sample from a lump, check stool for parasites, and run bloodwork or imaging if a tumor is suspected.
Treatment
- Anal sac problems: expressing (emptying) the sacs, flushing and antibiotics for infection, or surgery for repeated problems or tumors.
- Perianal adenomas: surgical removal, often with neutering.
- Perianal fistulas: immune-suppressing medication, and sometimes diet changes or surgery.
- Rectal prolapse: replacing the tissue under anesthesia and treating the cause of straining.
- Diarrhea or parasites: deworming, diet changes, or other treatment for the gut problem.
Safe home care (after your vet confirms the cause)
- Keep the area clean: gently wipe with a soft, damp cloth or unscented pet wipes after bowel movements.
- Warm compresses: a warm, damp cloth held on the area for a few minutes can ease soreness and help an anal sac drain, if your vet recommends it.
- Fiber, if your vet agrees: bulkier, firmer stool helps the anal sacs empty naturally. Vets may suggest a high-fiber diet or psyllium. Plain canned pumpkin adds a small amount of fiber but isn’t enough on its own for many dogs.
- Fresh water and exercise to support regular bowel movements.
- Healthy weight: overweight dogs have more anal sac problems.
- A cone if your dog keeps licking the area raw.
What to avoid
- Human hemorrhoid creams and suppositories (such as Preparation H): they contain ingredients like phenylephrine, numbing agents, or steroids that aren’t meant for dogs and can be licked off and swallowed.
- Squeezing or expressing anal glands yourself without training, which can cause injury or rupture.
- Ignoring a lump because it doesn’t seem to bother your dog. Anal sac tumors can be small and still serious.
- Human pain relievers such as ibuprofen or naproxen, which are toxic to dogs.
Frequently asked questions
Why is my dog’s bottom red and swollen?
The most common reason is an irritated or infected anal sac. Other causes include diarrhea, allergies, and tumors. A vet can tell the difference with a quick exam.
Why is my dog scooting?
Scooting usually means itchy or full anal sacs, but it can also be caused by allergies, worms, or skin irritation.
Can I use coconut oil or witch hazel?
There’s no good evidence they treat any of these conditions. Witch hazel products may contain alcohol that stings. Ask your vet what’s safe for your dog’s specific problem.
Sources
- Merck Veterinary Manual: Anal sac disease in small animals
- Merck Veterinary Manual: Perianal tumors and perianal fistulas in dogs
- Merck Veterinary Manual: Rectal prolapse in small animals
- American Kennel Club (AKC) Canine Health: anal gland problems in dogs
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.