Dogs naturally have some odor, especially after playing outside or getting wet, but strong or persistent bad smells can sometimes indicate an underlying medical issue. Skin infections, dental disease, ear infections, anal gland problems, and poor coat condition are all common causes of odor in dogs. Understanding where the smell is coming from and knowing when veterinary care may be needed can help keep your dog healthy and comfortable.
Medically reviewed by Aaron Stamper, DVM, Head Veterinarian, PetWow
Last medically reviewed: July 2026
Quick Answer:
Bad odor in dogs may be caused by skin infections, ear infections, dental disease, anal gland issues, allergies, poor coat condition, or other medical problems. Mild odor may occasionally improve with grooming and hygiene, but persistent or worsening smell often benefits from veterinary evaluation.
Common Causes of Bad Odor in Dogs
Bad breath is one of the most common causes of odor in dogs. Dental disease, infected teeth, and gum inflammation may all contribute to strong mouth odor and discomfort.
Dogs with ear infections often develop strong odor coming from the ears due to inflammation, bacteria, or yeast overgrowth.
Bacterial or yeast skin infections may create strong odor, greasy skin, redness, irritation, or hair loss.
Dogs with allergies may develop chronic skin inflammation, ear infections, and secondary infections that contribute to odor.
Dogs who are overdue for bathing or grooming may develop odor due to oil buildup, trapped debris, shedding, or skin irritation.
Impacted or irritated anal glands can produce an extremely strong and unpleasant odor. Some dogs may also scoot, lick excessively, or show discomfort around the rear end.
Wet fur, swimming, outdoor activity, or moisture trapped in skin folds may sometimes contribute to temporary odor.
Signs That Odor May Be Related to a Medical Problem
Bad odor may become more concerning when accompanied by:
• Ear redness or discharge
• Excessive scratching or licking
• Hair loss
• Greasy or irritated skin
• Bad breath
• Scooting or rear-end licking
• Redness or sores
• Paw chewing
• Changes in behavior or discomfort
Persistent odor is often a sign that something more than simple hygiene may be contributing.
When Is Bad Odor a Concern?
We assume if you’re reading this, that your dog is on another level when it comes to odor right now. If your dog went through a puddle, expect that “wet-dog” smell, that’s normal. However, if you’re worried there’s something deeper at play, we recommend calling your vet if your dog:
• Has persistent strong odor
• Develops skin irritation or hair loss
• Has recurring ear infections
• Has severe bad breath
• Seems uncomfortable or itchy
• Begins scooting or licking excessively
• Has symptoms that continue worsening
Full disclosure, we’re a veterinary clinic, but regardless of whether you use our services or another vet’s, addressing the underlying cause early can often help prevent more serious skin, dental, or ear problems.
Worried About Your Dogs Symptoms?
With 2 Northern Kentucky locations and a 7 doctor team, PetWow has been caring for local pets for decades.
If your pet isn’t acting like themselves, our team is here to help.
We can often accommodate same-day appointments — calling is the best way to check availability. ✅
Call Now at 859-781-2577
How Veterinarians Evaluate Bad Odor in Dogs
Because odor can originate from several different parts of the body, veterinarians may recommend examination and diagnostic testing to identify the underlying cause.
Evaluation may include:
• A Physical examination
• Skin and ear evaluation
• A dental examination
• Cytology or skin testing
• Parasite screening
• Additional diagnostics when needed
Treatment Depends on the Underlying Cause
Treatment recommendations vary depending on where the odor is originating and what condition is involved.
Possible treatments may include:
• Ear medications
• Dental treatment
• Grooming and coat care
• Allergy management
• Medicated shampoos
• Treatment for skin infections
• Anal gland expression or treatment
Many dogs improve significantly once the source of the odor is properly identified and treated.
How to Help Reduce Odor in Dogs
The following may help reduce odor and support your dog’s overall health:
• Regular grooming and bathing
• Routine dental care
• Consistent parasite prevention
• Monitoring for ear irritation or skin changes
• Scheduling regular wellness exams
• Treating allergies or infections early
Need Veterinary Care for Your Dog?
If your dog has persistent odor, skin irritation, bad breath, or ear problems, our veterinary teams in Florence and Highland Heights can help evaluate the cause and recommend treatment. We deal with these cases at our practices all the time. We can’t guarantee this, but we often have same-day appointments available, the best way to find out is to call!
Related Pet Health Topics
Related Veterinary Services
Here are some related services PetWow offers:
Wellness Exams:
Puppy and Kitten Veterinary Visits:
Pet Diagnostics:
Pet Dental Care:
Parasite Prevention:
FAQs
Sudden odor may be caused by ear infections, skin infections, anal gland problems, dental disease, or other underlying medical conditions.
Yes. Allergies can contribute to skin inflammation, ear infections, and secondary infections that may produce noticeable odor.
Bad breath is commonly associated with dental disease, infected teeth, or gum inflammation and may require veterinary dental care.
Bathing may temporarily help mild odor, but persistent or worsening smell should be evaluated by a veterinarian to identify any underlying medical issues.
PetWow has been helping Northern Kentucky pet owners care for dogs and cats for decades. Our veterinary teams in Florence and Highland Heights provide wellness care, diagnostics, dental care, grooming, and treatment designed to help pets stay healthy and comfortable. If your dog is experiencing persistent odor or related symptoms, our team is here to help.
About the medical reviewer:
Aaron Stamper, DVM, serves as PetWow’s Head Veterinarian and provides veterinary care to pets throughout Northern Kentucky. Dr. Stamper medically reviewed this page for accuracy and appropriate pet-care guidance.
Dr. Stamper has been practicing veterinary medicine for over 24 years and continues to work as the head surgeon at the PetWow in Highland Heights, KY.