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Staph infection in dogs

Understanding Staph Infections in Dogs: Causes, Symptoms, and Treatments

Written by: Dr. Kathryn Dench

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Time to read 9 min

Staph infection in dogs is one of the common bacterial skin infections in dogs. It's caused by the Staphylococcus bacteria, a germ found on the skin of humans and dogs. The germ in itself isn't harmful but it can result in infections and skin disease if your dog has a weak immune system or irritated skin.

Underlying conditions such as allergies, metabolic conditions such as hypothyroidism or Cushing's disease, and skin conditions like skin folds may cause these infections in dogs.

This article explores everything you need to know about Staph infection in dogs. We explain the causes, symptoms, diagnosis and treatment, and preventative measures.

Understanding Staph Infections in Dogs

Staph infection in dogs or staphylococcal dermatitis is a condition that affects a dog's skin.


Staphylococcus bacteria live harmlessly on the skin of healthy dogs. The bacteria is commonly found in the skin, hence the name staphylococcal dermatitis, which means "skin inflammation".


When Staph bacteria overgrow, the result is a staphylococcal infection. If your dog has poor skin hygiene, a weak immune system, an underlying cause, or other secondary infections, it can lead to staph pyoderma.


Any dog can get a Staph infection. However, puppies, older dogs, and dogs with immune-related issues like Cushing's disease are more vulnerable. This is because their weakened immune systems can't fight off bacteria easily.


There are different types of dog Staph infections, including the following:

Skin infections

Although Staphylococcus bacteria live dormant on a dog's skin, the pathogens can penetrate a healthy dog's skin and cause skin infections like staph pyoderma. This includes instances where your dog has skin disorders, metabolic illnesses, or injuries.

Systemic infections

Systemic infections are infections caused by fungi, viruses, or bacteria. These pathogens can be found in the eyes, nose, or lungs. When the pathogens enter a dog's system, they colonize either a part of the body or the entire system causing infections.

Resistant strains

Antibiotic resistance is a big issue in human and veterinary medicine. Some of the skin infections can develop resistance to medication. The most common resistant strain is Methicillin-resistant Staphylococcus aureus (MRSA). As the name suggests, MRSA is methicillin-resistant and treatment requires other types of antibiotics.


Staph infections in dogs have become a recent concern in the vet world. There are alarming statistics that show an increasing prevalence of infections, especially regarding antibiotic resistance. Vets are keeping a particular eye on Staphylococcus pseudintermedius,a common pathogen responsible for many canine skin infections. Studies show that it's responsible for 92% of dermatitis in dogs and there has been a dramatic increase in methicillin resistance in Staphylococcus pseudintermedius when historically this species remained susceptible to antibiotics

Causes of Staph Infections in Dogs

Causes of Staph Infections in Dogs

Staphylococcal dermatitis is caused by various factors like:

Bacterial imbalance and skin injuries

In a healthy dog, Staphylococcus bacteria usually live harmless and dormant on a dog's skin. The skin is designed to be a barrier that prevents pathogens from penetrating the skin and causing infection. However, when your dog has skin injuries like cuts, abrasions, or other skin disorders, the pathogens penetrate the skin resulting in a Staph infection.

Weakened immune system

Dogs with weaker immune systems are more prone to skin lesions than other dogs. A dog's system can be weakened by illnesses, medication, poor diet, and stress.

Environmental triggers and contact

Staph infection in dogs is zoonotic in nature, which means they can be transmitted from humans to dogs and vice versa. Exposure to other animals, contaminated surfaces, and unsanitary environments can increase the chances of skin infection.

Recognizing Symptoms of Staph Infections in Dogs

Staph infection in dogs will probably cause your dog to lick, chew, or scratch a part of their body to the extent that the skin becomes irritated and inflamed.

The following symptoms are an indication of a Staph infection:

Skin-related symptoms

Look out for signs like swollen and reddish skin, skin irritation, scabs, hair loss, and pustules.

Behavioral signs of discomfort

Signs like unusual irritability, excessive scratching and licking, and itching should be cause for alarm.

Systemic symptoms of severe infections

Symptoms of Staph infection in dogs can range from mild to severe. When the symptoms move from mild to severe with signs like lethargy, loss of appetite, and fever, take your dog to the vet immediately. They'll ask for your pet's medical history and conduct a complete physical examination.

Treatment Options for Staph Infections

While the vast majority of the bacteria that cause staph infections are harmless, Staphylococcus pseudintermedius can cause severe infections.


Proper treatment involves different stages as follows:

Veterinary diagnosis and testing

Depending on the type and duration of the symptoms, your vet will probably take a skin swab to determine whether it's a Staph infection or not. Very rarely, the vet may do a skin biopsy depending on severity. However, there are two main types of skin tests that vets usually conduct in these scenarios.

  1. Skin cytology is a test where clear tape is put on the skin, and then removed. The tape is stained and observed under a microscope.

  2. The other test is a culture and sensitivity test. Pathogens and allergy testing is done through a series of cultures and skin scrapes. Several antibiotics are tested on the cultures to see which one works.

Topical and oral antibiotics

The first route of medication for Staph infection in dogs is usually topical treatment which may include antibiotics. This may involve using antibacterial shampoo, ointment, and wipes. The use of topical agents reduces the risk of resistance developing to systemic antibiotics.


Medicated baths and shampoos help minimize the growth of pathogens and relieve symptoms. The other treatment option is oral antibiotics. This is especially used when the infection isn't responding well to topical methods.

Natural remedies and supportive care

When the infection isn't severe, you can use natural remedies to treat it. However, this approach should be used under your vet's guidance. For instance, diluted apple cider vinegar can be used on the skin to soothe the irritation.

Managing underlying conditions

If your dog has an underlying medical condition like cancer and is on treatment, they may be vulnerable to recurring infections. The medication they're on may compromise their immune systems and interfere with regular body functions. In such cases, you must manage the underlying conditions as best as you can as well as treat the infection.

Preventative Measures for Staph Infections

Preventative measures for Staph infections

As a dog owner, there are preventative measures you can take to protect your dog's skin and keep it healthy. They include:

Good hygiene and regular grooming

To keep your dog's skin healthy and free from infections, they need regular grooming and a good hygiene routine. This is especially important if your dog has cuts, abrasions, or skin folds.

Routine vet checkups

Routine check-ups will help with early detection of Staph infection in dogs before they become severe. Also, you get professional guidance on diet, grooming, exercise, and lifestyle suitable for your dog.

Strengthening the immune system

You can boost your dog's immune system with a healthy and balanced diet and regular exercise. Also, you can use approved holistic measures like the use of CBD oils and organic chews. If you don't know where to start with approved holistic measures, we recommend using  Happy-Furever™ CBD oil and chews.

Frequently Asked Questions (FAQs)

Can I catch a Staph infection from my dog?

Yes. Staph infection in dogs is zoonotic in nature, meaning that dogs can transmit the infection to humans. Good hygiene and early detection and treatment are essential in minimizing transmission. It's a good idea to wear gloves when grooming or treating your dog with a Staph infection.

How long does it take for a Staph infection to heal in dogs?

Between three to six weeks, with treatment. In addition to using antibiotics, the use of antibacterial shampoo and medicated baths helps in controlling the spread of infection.

Is there a way to prevent Staph infections if my dog has allergies?

You can use natural home remedies like diluted apple cider vinegar and antiseptics to cleanse the skin. Also, consult your vet for expert advice.

Conclusion

  • Staph infection in dogs is one of the common bacterial skin infections. Although the pathogens on the dog's coat are usually harmless and dormant, sometimes they can become full-blown infections. Causes of this happening include environmental factors and weaker immune systems.
  • When you notice unusual skin irritation, take your dog to the vet. Early treatment is crucial in managing Staph infections.
  • Don't worry... with proper supportive care and preventative measures, most dogs' staph infections can be managed effectively with antibiotic treatment.
Dr. Kathryn Rosalie Dench, MA VetMB MRCVS

Dr. Kathryn Rosalie Dench

With nearly two decades of experience, Cambridge veterinarian Dr. Kathryn Dench is dedicated to enhancing animal health through holistic practices. A member of the Royal College of Veterinary Surgeons, she focuses on preventive care over traditional methods, particularly for long-term wellness solutions in pets suffering from anxiety and chronic conditions. As Chief Scientific Advisor at Paw Origins, she champions holistic strategies and education to revolutionize pet care practices.

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We are more than happy to help walk you through this journey of holistic wellness with your dog!

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If a doctor gives your dog vital medication, you will surely find a way to get into their system, right? So, someone has to put on the adult pants here. 🐶


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Just like kids, our dogs sometimes need discipline and for us to lead. So don't coddle or baby them when it comes to training and what's beneficial for them!