Skip to main content


By June 23, 2021November 29th, 2022No Comments

Just like humans, pets can be affected negatively by mold. Mold can cause health problems for pets similar to those faced by humans. However, since animals are usually smaller than people, it takes smaller amounts of mold to have negative effects on them. How do you know if mold is making your pet sick? What can you do about it? Will mold make you sick too? Come read and learn all about pets and mold!


Blog information is NOT intended to provide or replace medical advice. NO information on this site should be used to diagnose, treat, prevent or cure any disease or condition.

*As an Amazon Associate we earn from qualifying purchases.

Suggestions for products to use are just that, suggestions. You know yourself and your home best. Please do your own research on any product you use in your home or on your skin, and learn all the facts for yourself. Thank you.


mold can be many colors not just black

Mold lives literally everywhere. That spot you keep your dog’s water bowl, your cat’s favorite window, stumps in your backyard, your compost pile, just the dirt in your yard… You guessed it, mold lives there, too.

Molds are fungi, and grow from microscopic spores that are everywhere in the air. Molds are found everywhere in nature, and are important for recycling organic matter (such as leaves). The recycling process they perform returns nutrients to the soil and is important for plants to grow. They need four things to grow: oxygen, moisture, a food source, and the right temperature range.

Food Sources

Molds grow inside of their food sources. They penetrate deeply into drywall, carpets, underneath kitchen and bathroom sinks, etc. Anything with carbohydrates in it could be considered a food source for molds.


Moisture is the one thing you can reasonably control when it comes to mold. A dry home equals a home with much less mold growth. Keeping areas dry, especially areas that use water frequently (like bathrooms), is important to prevent mold growth.

How Fast Do Molds Grow?

Moisture behind baseboards and cabinets, wet carpet tack strips, in crawl spaces, basements, and other hard to reach areas are a ticking mold time bomb. Once enough moisture is present, molds can begin to grow in less than 48 hours!


Mold is an insidious, invisible predator in your home. It hides in places no one ever thinks to look like under cabinets, in crawl spaces, attics, and behind furniture. People and their pets may spend weeks, months, and even years fighting illness, and never know what they are really fighting…mold. Many of our customers find us after a recommendation from their doctor or veterinarian, that they may in fact have a mold problem, and not just an illness. Mold is most often associated with allergies, but is much more dangerous than most people realize.


cat sneezing, pets and mold

There are two different ways pets can be exposed to mold including: ingestion (eating mold) and inhalation (breathing mold in the air). Just like people, pets can also have allergies to mold.

Mold Ingestion

child feeding dog, mold and pets

When pets eat or ingest mold, it is usually an accident. Pet food is subject to spoilage and contamination with mold just like people’s food. Those strawberries you bought last week and forgot about were covered in fuzzy growth. They were gross, but that fuzzy growth they were covered in was mold.

Pets can also ingest mold right in your home or backyard. Your dog’s favorite stinky towel smelling musty? Could be mold. That stump your cat loves to claw or your dog loves to gnaw on in the backyard? It could easily be a source of mold. Mold can digest just about any organic material (things made from carbon). So there could be more than one source of mold your pet has ingested.

Manufactured pet foods are held to high standards, but are occasionally recalled due to contamination. Pet food should be stored properly to reduce the chance that mold will grow on it at home. Use the following tips to reduce the chances of mold in your pet’s food.

Pet Food Safety Tips

  1. Store pet food in a sealed container, preferably the original container. Food should be kept in a cool, dry place free of excess moisture. Always wash and dry containers completely before refilling them. It is preferable to store food in the original packaging, as it contains important information (barcode, expiration date, batch code) that you need. In the event of a recall, the information would be close at hand.
  2. Wash your hands before and after handling pet food. Washing your hands for at least 30 seconds with soap under warm running water eliminates most microorganisms. It is important to wash again after handling pet food to avoid any microorganisms (such as Salmonella) from the pet food being transferred to the people in the home. These two simple steps can eliminate the possibility of spreading disease to both people and animals in your home.
  3. Wash pet food bowls daily. Would you eat off the same plate everyday without washing it? Microorganisms build up on dirty dishes after every meal. It makes sense to wash them away before eating again. In the same way, pet’s water bowls should be washed at least every other day to prevent disease.
  4. Check pet food as you feed your pet for contamination. If you see fuzzy things growing on the food, the food has mold! Never feed your pet contaminated food!
  5. Never feed your pet expired food. Always check that the food has not passed the expiration date. Expired food is more likely to become contaminated and lose its original nutritional value.

Mold Inhalation

dog sneezing, pets and mold

When mold is inhaled, through the nose and mouth, it is usually already in the pet’s environment. Pets have to breathe, so if mold is in their environment, they cannot avoid it. (By the same token, neither can you.)

MVOC’s – What’s that smell?

That old stinky towel your dog seems to love? It could be contaminated with mold. Musty, stinky, wet dog, old gym sock type smells are not always what they seem. Many times they are caused by mold.

MVOC’s or Microbial Volatile Organic Compounds are compounds created by fungi and bacteria during their metabolic processes. MVOC’s can be detected by simply smelling the air. The smell of MVOC’s has been compared to stinky socks, locker room odor, wet dog, or old cheese. They give off a distinctly musty, moldy smell. There are over 200 compounds that have been identified as MVOC’s. MVOC’s can be dangerous and even toxic to humans. If you smell odors like this, you may have a mold problem in your building.

How do I know if it’s mold?

Mold hides in places people rarely think to look such as in cabinets, under floors, crawlspaces, attics, basements, and other inaccessible locations in your home. Usually the first indication you have a problem is the smell. These little seen places can be havens for mold if moisture builds up. The only way to get rid of problems from mold is to remove the mold. Mold, like dirt, has to be removed, NOT killed. Keep reading to find out how to deal with mold in your home!


Mycotoxins, toxic symbol, skull and cross bones

While all molds have the potential to cause irritation and allergy symptoms, some molds can also cause much more dangerous health problems. Some molds, but not all, produce toxins. Toxic molds can cause health problems ranging from poisoning to cancer. Not all molds are toxic, but many are.

You’ve probably heard that black mold is toxic. However, dangerous and toxic mold is not just black, it can be many different colors. Toxic molds can appear to be green, yellow, brown, or black. So, where is the line between an allergic mold and a toxic mold? That line is defined by something called a mycotoxin, and is NOT defined by color.

Mycotoxins, literally ‘fungus poison’ in Latin, are chemical substances produced by molds that can cause many health problems ranging from mild to severe. Molds that produce mycotoxins are the ones that could be categorized as toxic or poisonous. Even if you are not allergic to mold, you can be affected by mycotoxins.

To learn even more about the health effects of mold check out our posts:

Allergy Symptoms in Pets

Mold is typically associated with allergies in pets, but as we’ve said mold can be much more dangerous than just allergies. Pet allergies also look somewhat different than human allergies.

Typical allergy symptoms in pets include:

    • Respiratory symptoms like sneezing, breathing difficulties, coughing, wheezing, and discharge from the eyes and nose
    • Excessive licking or scratching which can lead to fur loss and painful sores
    • Lack of energy

Symptoms Caused by Toxic Mold in Pets

More dangerous symptoms can also be attributed to mold due to the presence of mycotoxins. Pets can exhibit symptoms such as:

  • bleeding from the mouth or nose
  • neurological problems due to mycotoxins (acting strangely)
  • digestive problems, such as vomiting and stool changes, including damage to the gastrointestinal tract
  • weakened immunity to other secondary diseases

When pets ingest mold with their food or inhale mold through the nose, they can exhibit these types of symptoms. Unfortunately, symptoms of mold exposure can mimic symptoms of other health conditions making it more difficult to diagnose mold exposure. The most important thing to remember if your pet is exhibiting these symptoms is to get them to the veterinarian right away! The effects of mold can be reduced if treated early. However, in the long term exposure is much more serious, and can lead to very dire consequences including organ failure.



In humans, mold is also most often associated with allergies, but mold is much more menacing than people know. While all molds have the potential to cause irritation and allergy symptoms, molds can also cause much more dangerous health problems for people including: fungal poisoning and mental health problems. You can learn more about mycotoxin poisoning in our article: When Mold Is Worse Than Allergies.

To learn more about one of our customer’s real homes, and how we helped solve their moisture problems check out our post: How Does Mold Affect Your Health?


sick dog at the vet

Step 1 – Get to the Vet!

Step 1 is always to get your pet to the veterinarian quickly! Most of the time, treatment for mold in pets is a supportive type of care that reduces the symptoms that your pet is experiencing. Medicine that will help manage respiratory symptoms, reduce vomiting, and using IV fluids for dehydration ease the symptoms of mold exposure.

However, the best way to stop your pet’s symptoms is to eliminate the mold exposure in the first place. Ever heard the expression, ‘Prevention is worth nine-tenths of the cure?’ It’s certainly true for mold exposure!

Step 2 – Find the Mold and Remove It

If your pet is suffering from mold exposure, the best place to start is with a paid Indoor Air Quality Assessment. An Indoor Air Quality Assessment, like ours, will help you get to the root of your problem, and find all the areas in your home where mold is lurking. Maybe it’s just that musty smelling towel, or maybe you have bigger problems. You won’t know without an inspection. At Branch Environmental, we treat each inspection as an investigationAll areas of your home are searched from top to bottom. Mold can lurk everywhere, so we search everywhere.

The inspector will define the extent of the necessary work to remove the mold, and what may or may not need to be done. Your inspector should talk you through all your options, and tailor a plan that fits your needs and your budget. 

Be sure to ask a lot of questions at this stage. The company you hire for an Indoor Air Quality Assessment should charge you for this service. Never expect a company that offers a ‘free’ inspection to do a good job finding all the mold!


person confused

Once you have had a home inspection, you may wonder if professional help is really necessary. Customers often ask us, “Can I clean the mold myself or do I need a professional?” Our answer depends several factors including:

  • how extensive the mold problem is
  • what building materials, furnishings, and belongings are affected
  • where the mold is located
  • whether or not you mind being in confined spaces such as your crawlspace, basement, or attic

If you’re familiar with our blog, you know that the first thing to do when cleaning mold is to fix the moisture problem that led to the mold growth. Until you fix the moisture problem, mold will continue to grow and spread.

Mold is great at hiding in hard to detect locations such as in drywall and insulation. If the area of mold covers more than about 10 square feet, there is a good chance the mold problem is more than an isolated issue. It’s time to call in the professionals when you smell a musty odor in your home you can’t identify, or have health problems associated with mold.

If the area of mold is less than 10 square feet, you may be able to handle it yourself. To get all the details check out our post: Cleaning Mold: DIY vs. Professional.


Best Mold Removal Companies Near Me

Have you ever had mold removed from your home? Do you know what to ask mold removal companies? What do mold removal companies really do?

As a mold removal company, we know what you should expect and what the industry standards should be. Some of our competitors offer “free” mold inspections. Which basically means that the inspector shows up and hands over a price to fix a symptom, without truly knowing the nature of the problem. The primary reason that we charge for our mold inspections is the time and resources that go into each one.

If you think you might have a mold problem, you’re far better off with a thorough inspection like ours. We analyze the symptoms to determine the root cause of your problem, and will only recommend solutions that will solve the actual problem.

Especially if you live outside our service area, check out our post: How to Choose the Best Mold Removal Company. We let you know what you should expect and what the industry standards should be. If the company you interview doesn’t know the answer to the questions in our article, you don’t want to hire them!


home maintenance

By performing home maintenance checks on a regular schedule, every 3-4 months, you can prevent minor leaks from becoming a major problem.

The mold in your home quite likely was caused by a water leak or moisture buildup in an area of your home (such as bathroom ceilings, attics, crawlspaces, etc). How do you prevent mold from growing in the first place? Three words….Keep It Dry!

The best way to prevent mold from growing is simply to keep everything dry. No water, no mold growth. How can you keep it dry? By performing home maintenance checks on a regular schedule, every 3-4 months, you can prevent minor leaks from becoming a major problem. Running bathroom fans every time you shower prevents moisture from building up in bathrooms. Dehumidifiers in basements and crawl spaces help reduce moisture levels as well.

To avoid tiny, long term, potentially costly leaks, check pipes in the crawl space or basement, under sinks, around toilets and showers, and near appliances at least every 3-4 months. Areas under sinks, behind appliances, around toilets, and baths or showers should stay dry to prevent mold growth.

Use strainers on all sink drains to help prevent clogs from hair or food buildup. If a clogged pipe develops, fix it quickly! Don’t wait weeks or months to solve the problem of a slow draining sink. The longer you wait… the longer the mold has time to grow.

For more about water damage prevention, check out our article: Top 10 Ways to Prevent Water Damage.


pets and mold

At Branch Environmental, we love our pets just as much as you do. Our company slogan is that “Nobody should live or work in a building that makes them sick!”, and that includes our furry friends!

When we perform an inspection, we work tirelessly to determine the root cause of your problem. We see each mold inspection as an in-depth investigation, not an opportunity to hand over a guess-based estimate of work. If you think you need a mold inspection, get in touch with us, and we’ll get down to the source.

Most people rarely plan for the expense of mold removal, so here at Branch Environmental, we are careful to help control costs and manage your expectations from the beginning. With a clear understanding of the problem, we can work with you to create a mold remediation protocol that fits your needs.

Call Branch Environmental. We’re experts not only at mold removal, but at determining and remediating the underlying causes. From hidden mold sources to major contaminants, we can identify exactly what is going on in your home and rid it of environmental toxins, often for good.

Branch Environmental – Because nobody should live or work in a building that makes them sick.


Join Thousands Of Other Customers Who Have Already Eliminated Toxins From Their Homes, And Their Lives.