ALL ABOUT DOGS and CATS Resource Center for Canine & Feline Lovers
Itchy, Smelly Dog? This May Be the Problem…
Dr. Karen Becker
Both people and dogs have a normal amount of healthy levels of yeast that occur naturally
on the body. The typical normal, healthy flora of dogs is a naturally occurring staph, as well
as a light layer of naturally occurring yeast. These healthy levels of flora are possible thanks
to a balanced immune system.
How a Yeast Infection Occurs
On the immune system spectrum, balance is in the middle, and that’s what you want
your dog’s immune function to be – balanced. An underactive immune system can lead
to yeast overgrowth, because it can’t control the balance. The other end of the spectrum
is an overactive immune response where allergies are present. This can also lead to
problems with yeast.
When a traditional veterinarian sees a dog with allergies – a sign of an overactive immune
system – he or she will typically prescribe steroid therapy to shut off the immune response.
(This improves symptoms but does not fix the underlying cause of the allergies.) When
your dog’s immune system is turned off with drugs, it can’t do its job of regulating and
balancing normal flora levels, so your pet ends up with yeast blooms.
When conventional vets see dogs with allergies and possibly secondary skin infections,
often they prescribe antibiotics. Antibiotics are well-known to destroy all good bacteria
along with the bad, wiping out healthy yeast levels in the process, so these drugs often
make a bad situation worse.
Another reason an allergic dog, in particular, can end up with a lot of yeast is he can
actually develop an allergy to his yeast. Intradermal tests often reveal that a dog is having
an allergic response to his own natural flora.
This situation can be very problematic because the dog’s allergic response can affect his
whole body. These dogs are often red from the tip of the nose to the tip of the tail – their
entire bodies are flaming red and irritated. So dogs with an underactive immune system or
that are immuno-suppressed can end up with a yeast infection, as well as dogs that have
overactive immune systems, or allergies.
Signs and Symptoms of a Yeasty Dog
Definitive diagnosis by a vet of a yeast infection is accomplished either by cytology
(looking at a skin swab under a microscope) or by culturing (submitting a sterile swab of the
skin to the lab where the cells are grown and identified on a petri dish). But as a pet
owner, you’ll be able to tell if your dog has a yeast infection just by her smell. Yeast has a
very characteristic odor. Some people think it smells like moldy bread; others liken the odor
to cheese popcorn or corn chips. In fact, some people refer to a yeast infection of a dog’s
paws as ‘Frito Feet.’ It’s a pungent, musty, unpleasant smell.
The odor of a yeast infection is not a normal doggy odor. Healthy dogs don’t have a
‘doggy odor.’ So if your pup has stinky paws or musty-smelling ears, chances are she’s
dealing with a yeast overgrowth.
Another sign your dog is yeasty is scratching. Yeast overgrowth is tremendously itchy. If
it’s a problem with her paws, she won’t be able to leave them alone. The same goes for
her ears. A lot of butt scooting can also be a clue.
If your dog is spending a lot of time digging at herself to relieve intense itching, take
heed. Whether it’s a bacterial or yeast infection, she needs your help to solve the problem.
Step #1 in Clearing a Yeast Infection: Address the Diet
If your pet is dealing with yeast overgrowth, there are a couple of things you’ll need to
Number one, you must address his diet. It’s rare that a dog has yeast in just one spot –
one ear, for example. If that’s the case with your pet, you can probably get by just treating
that ear for yeast and keeping your fingers crossed his immune system responds to re-
balance his natural flora.
But if your dog, like the majority, has yeast in more than one spot, for example on all
four paws or both ears, or especially if his entire body is yeasty, you have no choice but to
look at what he’s eating.
Diet is the foundation of health. The way you nourish your dog is either going to help his
immune system manage yeast, or it’s going to feed a potential or existing yeast overgrowth
situation. I encourage you to put your pet on what I call an ‘anti-yeast diet.’ The beauty of
an anti-yeast diet is it is also an anti-inflammatory and species-appropriate diet.
Yeast needs sugar as a source of energy. Carbohydrates break down into sugar. Both
MDs and veterinarians advise patients with yeast to get the sugars out of their diets.
Dietary sugar isn’t just the white kind added to many pet treats and some pet foods. There
are ‘secret,’ hidden forms of sugar that can also feed yeast overgrowth, for instance,
honey. Although honey can be beneficial for pets in some cases, it does provide a food
source for yeast. So if your dog is yeasty, you’ll need to carefully read his pet food and treat
labels and avoid any product containing honey, high fructose corn syrup, and even white
potatoes and sweet potatoes.
If your dog has a significant yeast problem, I recommend you go entirely sugar-free.
Feed low-glycemic veggies. Eliminate potatoes, corn, wheat, rice – all the carbohydrates
need to go away in a sugar-free diet. This is really an important step. I wish I could tell you
yeast is easy to treat and avoid without addressing diet, but it isn’t. Your pet needs to eat
a diet that helps keep his normal flora levels healthy and balanced.
The second thing I recommend is adding some natural anti-fungal foods to his diet, like a
small amount of garlic or oregano. These foods are both anti-fungal and anti-yeast and can
be beneficial in helping reduce the yeast level in your dog’s body.
Disinfecting Yeasty Ears
In addition to providing an anti-yeast diet and anti-fungal foods, the third thing you must
do to help your dog overcome a yeast infection is to disinfect yeasty body parts.
This is actually an often overlooked, but common sense, almost-free step in addressing a
yeast overgrowth in pets. In human medicine, it is routine for internists and dermatologists
to give patients with yeast specific protocols for cleaning affected parts of the body. The
same instruction is rarely given in veterinary medicine, which makes no sense and is really a
Typically, a vet will hand a client with a yeasty dog a cream, salve or dip, with instructions
to just keep applying it to the infected area. The problem with this approach is that as
yeast dies off, it forms layer of dead yeast on top of layer of dead yeast. Unless you remove
the dead layers of yeast and disinfect the skin, adding loads of ointment to layers of dead
yeast can actually exacerbate the problem.
So disinfecting the parts of your dog’s body that are yeasty is very important. There’s no
pill or cream that can disinfect your pet – you must do that yourself.
If your pet’s ears are yeasty, you’ll have to disinfect them daily. Just as some people
produce lots of earwax and clean their ears daily, while others produce almost no earwax,
the same applies to dogs. Some almost never need their ears cleaned, while others need a
daily cleaning. The frequency is entirely dependent on how much debris your dog’s ears
produce. So if your Lab has soupy ears throughout the summer months, you’ll need to
clean them every day during that period.
If you check your dog’s ears and they’re clean, dry and have no odor, you can skip a day
of cleaning. Again, the amount of cleaning should correlate with the amount of debris built
up in the ear. If you don’t clean out that debris, it won’t magically disappear on its own. It
will grow from wax, to yeast, to a fulminating bacterial infection unless you deal with it.
You can disinfect your dog’s ears with either a store bought solution or with witch hazel
and large cotton balls. Use as many cotton balls as it takes to remove all the debris from the
ears at each cleaning. Do not put Q-tips down into the canals of your dog’s ears.
Disinfecting Yeasty Paws
Yeast thrives in a moist environment and in crevices – between your dog’s foot pads, for
example, in armpit and groin creases, and around the vulva and anus. So disinfecting those
parts of a yeasty dog is really important.
Since the only body parts that sweat on your dog are his nose and the pads of his feet,
during hot humid months when yeast tends to thrive, you’ll need to disinfect those paws.
Depending on the size of your dog, you can use one of those Rubbermaid sweater
boxes filled with water from a hose, or if your dog is small you can just pop him in the
kitchen or bathroom sink. If you have a giant size breed, you can try a coffee can or cup
filled with water. The goal is to dunk the feet, then pat them dry.
Spraying or wiping down a dog’s paws won’t get the job done. Yeast lives under the nail
beds and in all the creases you can’t get to if the paws aren’t submerged in a foot soak. I
recommend a gallon of water, a cup of hydrogen peroxide, and 1-4 cups of white vinegar
as a foot soak solution. You can use this solution as many times a day as necessary to keep
your dog’s feet clean. ‘Clean and dry’ needs to become your mantra.
After you dip your dog’s feet in the astringent solution of water/hydrogen
peroxide/white vinegar, there’s no need to rinse. Just pat the paws dry. Leaving the
solution dried on your dog’s paws serves as an antifungal and should also reduce licking and
digging at the paws.
Anti-Yeast Baths and Rinses
If your dog has yeast overgrowth on her skin, I recommend disinfecting her entire body
with a natural, anti-fungal shampoo. And yes, you can do this as often as necessary.
It’s no longer true that you shouldn’t bathe dogs regularly. Back in the days of very
harsh shampoos made from coal and tar derivatives, this was good advice. But there are
now plenty of safe shampoos on the market that will not over dry your pet’s skin or
damage her coat.
Since carbs and grains ultimately feed yeast overgrowth, I don’t recommend you use
oatmeal-based shampoos. Oatmeal is a grain which provides a food source for that yeast on
your dog’s skin.
Use an anti-fungal shampoo made from, for example, tea tree oil or an herbal blend.
These will help control the amount of yeast growing on your pet. I also recommend anti-
fungal rinses during the summer months, from one to three times per week after
shampooing. I use a gallon of water with a cup of vinegar or a cup of lemon juice. You can
also use 20 drops of peppermint oil. All three will make your pooch smell nice.
After shampooing with, say, a tea tree shampoo and rinsing thoroughly, follow with one
of these natural anti-fungal astringent rinses to knock down the amount of yeast.
You should never pour these rinses over your dog’s head or into her eyes. Pour from the
collar, back. Pour the gallon of solution over her and rub it into her coat and skin, focusing
on body parts that tend to grow yeast — armpits, feet, groin area and around the tail.
Then towel dry without rinsing. Your dog will not only feel better, the yeast won’t replicate
One word of warning about using both lemon juice and hydrogen peroxide: they can
bleach a black dog’s fur. If you have a black coated dog, you should go with vinegar to
avoid a lightening effect.
For Dogs with Stubborn or Recurring Yeast Infections
For many dogs, yeast problems are seasonal. When the temperature and humidity levels
rise each year, they get yeasty and stinky. If this is the case with your dog, the summer
months are when you’ll need to be vigilant about disinfecting your pet and addressing any
dietary issues that might be contributing to the problem.
However, if your dog has year-round yeast problems – whether it’s 90 degrees outside
or the dead of winter – you should be thinking about potential immune system issues. If
your dog is overwhelmed with an opportunistic pathogen like yeast, it’s likely his immune
system isn’t operating at 100 percent.
In my practice, when I see a pet with a stubborn yeast infection, I do immune testing to
measure his immunoglobulin levels (IgG, IgM and IgA). Generally these levels are low in a
dog with constant yeast overgrowth. If your dog is producing healthy levels of
immunoglobulins, he should be able to overcome almost any infection, and particularly an
opportunistic yeast infection.
Dr. Becker is the resident proactive and integrative wellness veterinarian of
HealthyPets.Mercola.com. You can learn holistic ways of preventing illness in your pets by
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