What should I check if my dog smells from under the tail? | arlo.® Atlas
Share This Guide
Read time: 3 minutes
Overview
If your dog smells from under the tail, the most common causes are usually dirty fur, anal gland issues, skin irritation, or moisture getting trapped around the back end. It’s often something you can check at home first, but you can’t always tell the cause just by smell alone.
Things To Check
1. Check whether the smell is coming from the skin around the tail, the bottom, or the coat nearby rather than the whole dog.
2. Look closely for redness, swelling, sores, scabs, damp fur, or any discharge around the tail base and under the tail.
3. See whether your dog has been scooting, licking, biting, or rubbing the area more than usual.
4. Check the fur for faecal staining, trapped debris, or matting, especially if your dog has longer hair.
5. Notice if the smell is stronger after toileting, exercise, muddy walks, or a wet day outdoors.
6. Gently feel for any warmth, tenderness, or a lump beside the anus, but stop if your dog seems uncomfortable.
7. Consider whether there has been a change in your dog’s diet, stools, or toilet habits, as this can sometimes go along with odour problems.
Common Causes
Dirty fur or a wet, matted coat around the back end is one of the simplest causes, especially in long-haired dogs or after muddy walks.
Anal glands are another common reason. If they’re full, irritated, or not emptying normally, the smell can be quite strong and may come and go.
Skin irritation, sore skin, or a mild infection around the tail base can also cause odour, particularly if your dog has been licking or scratching.
Less commonly, parasites, a dirty bottom after loose stools, or an underlying health issue affecting the skin or digestion may be involved.
What To Do
Start by gently checking the fur and skin under the tail and cleaning away any visible dirt with warm water and a dog-safe grooming routine. Dry the area well afterwards so moisture doesn’t linger.
If the coat is long or prone to matting, regular trimming and grooming around the back end can help keep the area cleaner between washes.
Keep an eye on your dog’s stools, scratching, scooting, or licking, because changes there can help you work out whether the smell is just a grooming issue or something more ongoing.
If the odour keeps returning, seems strong and fishy, or comes with soreness, discharge, or behaviour changes, it’s sensible to book a vet visit for a proper check.
When To Contact A Vet
Speak to your vet if the smell is persistent, your dog is scooting a lot, seems painful, has swelling or discharge, or the area looks red and sore. You should also get advice if there are changes in toilet habits, loose stools, or the smell keeps coming back after cleaning.
Related Questions
Why does my dog smell fishy around the back end?
Could anal glands be the reason my dog smells under the tail?
How do I clean my dog’s bottom safely?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.