Top 10 Diseases of Obese Dogs

Overweight and obese pets have been on the rise for over a decade and the COVID 19 pandemic increased these already disturbing trends and numbers. Because this condition touches an increased number of pets daily, veterinary professionals want to raise awareness about this delicate subject. We, veterinarians, are seriously concerned because being overweight, and pet obesity severely increase the risk of certain diseases. 

 

In 2017, Nationwide®, the U.S. dog and cat insurance company, reported and ranked the top 10 diseases reported in dogs and cats, with total pet obesity-related claims exceeding 1.3 million over the past year.

 

  

What are the risks of dog obesity and the disease linked to it? 

Unfortunately, although many people find a chubby dog adorable, these pups might not have long left with their loving pet parents. Indeed, many chronic diseases that are hard to treat will occur when your dog is overweight. Top of the long list are:

 

1. Osteoarthritis
2. Cystitis / Urinary tract infection
3. Hypothyroidism
4. Hepatitis / Liver disease
5. Torn cruciate ligaments
6. Diabetes
7. Herniated disc
8. Chronic renal failure
9. Cardiac insufficiency
10. Lipoma

 

What is the increased risk of dog obesity?

When looking at numbers in the veterinary industry, Banfield hospitals, owned by Mars, are often referenced, as they own and operate thousands of hospitals across the united states. So, according to a report from Banfield hospitals, an overweight dog was more likely to be ill than a perfect weight dog: 

 

• 3.9 more times for dermatological issues 
• 3.7 more times for endocrinological disorders like diabetes mellitus or hypothyroidism 
• 3.1 more times for orthopedic conditions like cranial cruciate ligament rupture 
• 2.4 more times for respiratory conditions like COPD (Chronic Obstructive Pulmonary Disorder)

How much will dog obesity cost me? 

Your dog's obesity will lead to morbid conditions, with the top 10 mentioned above. Depending on your dog's disease, you will have a wide range of costs associated with pet obesity. 

 

Petplan, another insurance company, estimated in 2017 the different costs of primary diseases linked to obesity. 

 

According to this study, the average fee for a lameness consultation related to osteoarthritis was 950$. Furthermore, obesity increases the risk of a torn knee ACL (Anterior Cranial Ligament), costing an average 3,500$ to treat by surgery. 

 

According to Petplan, cystitis and urinary tract infections might become emergencies and lead to a $590 bill.

Furthermore, to diagnose and treat cardiac conditions, veterinary fees are estimated to be approximately $1,250.

Although overeating is not a disease, it can lead to indigestion, blockage, etc. So, PetPlan reports the average cost for treatment to be $850.

Overweight pets, like people, are more likely to have certain types of cancer. PetPlan estimates the average cost to treat pet cancers at $2,000.

If you are concerned about your dog's weight or you want to educate yourself on proactively managing your pet's health, reach out to your veterinarian and read our dedicated article on managing your pet overweight or obese. We hope you understand why keeping your pets lean is key to having them live a long, happy life!

 

FAQs

How long do obese dogs live?

Obesity can shorten a dog’s lifespan by up to two years or more, depending on the breed, age, and underlying health conditions. Extra weight puts stress on joints, the heart, and other vital organs, accelerating age-related decline. The goal isn’t just weight loss, it’s improving long-term health and mobility. With the right diet, portion control, and daily activity, most dogs can safely return to a healthier weight and live longer, more comfortable lives.

What diseases are linked to obesity?

Obesity in dogs is linked to a higher risk of chronic health conditions such as osteoarthritis, diabetes, liver and pancreatic issues, high blood pressure, heart disease, respiratory issues, and even some cancers. Carrying excess weight places added strain on nearly every system in the body. Managing your dog’s weight is one of the most important steps in preventing these diseases and supporting long-term wellness.

What is the fastest way for a dog to lose weight?

There is no healthy “quick fix,” but the most effective way for a dog to lose weight is a combination of a calorie-controlled diet, increased daily movement, and cutting out high-calorie treats. Choosing low-calorie treats, controlling portion sizes, vet-made rations, and using vet-recommended weight loss supplements can also support progress. Safe weight loss should be gradual, typically one to two percent of body weight per week, to protect your dog’s metabolism and muscle mass.

What are the health problems caused by obesity in dogs?

Dogs who are overweight face a wide range of health issues. These can include joint pain, limited mobility, difficulty breathing, reduced stamina, increased risk during anesthesia, liver issues, and a shorter lifespan overall. Obesity affects nearly every system in the body. Helping your dog achieve a healthy weight can dramatically improve their comfort, energy, and long-term quality of life.

What is the most common complication of obesity?

The most common complication of obesity in dogs are osteoarthritis and diabetes. Excess weight places continuous stress on joints, accelerating the breakdown of cartilage and causing chronic inflammation. Over time, this can lead to pain, stiffness, and difficulty moving. For dogs already dealing with joint problems, weight loss ingredients like L-Carnitine or E. faecium IDCC 2102 and joint-support supplements like UC-II®® collagen are especially important for managing discomfort and maintaining mobility.