Have you ever gotten a whiff of something foul from your dog? You want to ignore it, but you can’t help but wonder why your dog smells like fish.
Unfortunately, it could be a sign that your dog has an infection somewhere in their body.
There are a few reasons your dog smells like fish. Here are the most common areas of your dog’s body that could be emitting a funky smell into your home:
- Teeth and gums
- Anal glands
- Urinary tract
- Vaginal area
That’s a lot of bases to cover when you’re trying to find the source, so let’s narrow it down.
If you’re asking, “why does my dog’s breath smell like fish?” then a dental issue may be the source of the smell. The cause could be periodontal disease, a common gum disease that can damage your dog’s teeth and gums — leading to tooth decay or loss of teeth — if left untreated.
Often, bad breath isn’t the only sign that your dog needs dental treatment. Look for symptoms like:
- Trouble chewing
- Bleeding gums
- Loose teeth
- Nasal discharge
If you notice these symptoms, you might need to schedule an exam and cleaning. Be prepared to shell over some money because, without dog insurance, you could have to pay thousands of dollars for dental treatments.
Anal glands, sometimes called anal sacs, are two small pouches on each side of the anus. These sacs contain sweat and specialized fluid that marks feces with your dog’s signature scent. Some dogs may release (or express) this scent when they’re scared or stressed.
This scent often smells foul or fishy to the human nose. Look out for symptoms of infected anal glands like:
- Scooting across the floor
- Excessive licking
- Trouble pooping
- Blood in stool
- Discomfort when sitting
Your veterinarian might inspect your dog thoroughly to rule out things like tumors and abscesses. It’s likely that the glands are impacted and need to be drained. We assure you, you don’t want to do this at home. Professional care is recommended for the procedure to ensure proper safety, and you won’t have to deal with the unpleasantness.
Do you have a female dog? If the answer is yes, then you might have a vaginal infection on your hand. Female dogs may experience vaginitis or vaginal overgrowth in their lifetime.¹ Oftentimes, bacteria or yeast infections can cause that fishy smell plus other uncomfortable symptoms like:
- Swollen vulvas
- Trouble urinating
- Excessive licking
Just like with anal glands, it’s not recommended to attempt to treat this at home with DIY remedies. You could make the infection worse. A professional exam can rule out vaginal prolapse and other severe conditions that affect young female dogs and puppies.¹
A runaway urinary tract infection (UTI) can get stinky if left untreated, especially if your pup has had an accident in the house. What you’re smelling is the overgrowth of bacteria in their bladder.
Antibiotics are typically needed to treat a UTI. Your vet may choose to take X-rays to make sure the infection hasn’t spread to your dog’s kidneys. Make sure your pup is getting enough water as dehydration is the major reason many dogs develop a UTI.
A fishy smell could also come from overgrown bacteria or yeast on your pet’s skin.² To determine if this is the case, carefully inspect their fur, especially around nooks and crannies like their legs, groin, and ears. See if you can spot signs of skin problems such as hair loss, redness, bumps, excessive scratching, and rashes.
A vet can do a more thorough exam in their office and may prescribe shampoos and other medications to treat the problem.