It’s easy for a few extra pounds to creep up on a dog or cat. Changes can happen gradually, and when a pet is still eating, playing and enjoying life, weight may not seem like a health concern.
October is Pet Obesity Awareness Month, making it a good time to look beyond the number on the scale and consider what excess weight can mean for a pet’s health.
Obesity is increasingly recognized as a medical condition because it can affect mobility, breathing, metabolism, stamina and overall health. It can also become more significant when another health problem develops — from arthritis or an orthopedic injury to diabetes, respiratory disease or a condition requiring surgery.
At Boundary Bay Veterinary Specialty Hospital (BBVSH) in Bellingham, that intersection is often where we encounter obesity. Most pets aren’t referred to a specialty and emergency hospital because of their weight. They’re here because they need care for a more complex medical or surgical condition, and their body condition becomes one of the factors considered as part of their overall care.
Looking at weight in that context changes the conversation. The goal isn’t a particular number or how a pet looks. It’s supporting their comfort, mobility and overall health.
How Can Excess Weight Affect a Pet Who Is Already Sick or Injured?
The effects of excess weight can become particularly important when a pet is already managing another health condition.
Osteoarthritis is a good example. A dog carrying extra weight places more load on already painful joints. If discomfort causes that dog to move less, reduced activity can make maintaining a healthy weight more difficult, creating a cycle of decreased mobility and further weight gain.
Excess weight is also associated with health concerns including diabetes and insulin resistance, respiratory problems, heat intolerance, reduced stamina, and orthopedic and mobility problems.
These associations can have practical implications in specialty medicine.
A dog referred to our Surgery team for an orthopedic injury, for example, may need their body condition considered as part of anesthesia, surgical planning and recovery. Maintaining a healthier weight following treatment can also help reduce the ongoing mechanical load — the physical force placed on the joints during movement.
For some patients seen by Internal Medicine, weight, nutrition and metabolism may be part of managing diabetes, endocrine disorders or other complex medical conditions. Endocrine disorders are diseases involving the body’s hormone-producing glands and can affect functions such as metabolism, appetite and weight.
Body condition may also become relevant when a pet arrives through Emergency. A seriously ill or injured patient may require stabilization, anesthesia, respiratory support, advanced diagnostics or hospitalization, and obesity can add complexity to their care.
In these situations, excess weight may not be the condition that brought the patient to BBVSH, but it can be an important part of understanding and managing their overall health.
Is Your Pet at a Healthy Weight? Look at Body Condition, Not Just the Scale
A pet’s weight on the scale is only one measurement. Breed, body size, age, muscle mass and individual build all influence what is healthy for an individual dog or cat. That’s why veterinary teams also assess body condition.
One commonly used clinical tool is the Body Condition Score (BCS). BCS is a standardized, hands-on assessment that uses both touch and visual landmarks to estimate body fat. It considers how easily the ribs can be felt, whether there is a visible waist from above and whether there is an abdominal tuck when viewed from the side.
At home, you can look for some of the same features:
- Feel the ribs: You should generally be able to feel them easily with light pressure.
- Look for a waist: Viewed from above, most dogs and cats at a healthy body condition have a visible waist behind the ribs.
- Check the abdominal tuck: Viewed from the side, the abdomen should generally rise behind the rib cage rather than continuing in a straight or rounded line.
Veterinary teams may also assess Muscle Condition Score (MCS), which evaluates muscle mass separately from body fat. This can be particularly important for senior pets and pets with chronic disease, because a dog or cat can carry excess body fat while also losing muscle.
The Association for Pet Obesity Prevention (APOP) provides free, species-specific body condition guides and Body Condition Score charts that can help pet owners learn what to look and feel for at home. These tools are useful for screening and monitoring, while your veterinary team can confirm your pet’s body and muscle condition.
Where Should You Start if Your Pet Needs to Lose Weight?
Your family veterinarian is the right place to start. They can assess your pet’s body and muscle condition, consider whether an underlying medical condition may be contributing to weight changes and help establish an appropriate weight goal.
For many pets, a weight-management plan may include accurately measured meals, accounting for treats and other sources of calories, determining an appropriate daily calorie intake, and incorporating safe, regular activity or enrichment.
The appropriate approach depends on the individual patient. A young, otherwise healthy dog may be able to increase daily walks and play, while a senior dog with osteoarthritis or a pet with respiratory or mobility limitations may require a more carefully tailored activity plan.
Regular weigh-ins and reassessment of body condition can help determine whether the plan is working and when adjustments may be needed.
The Association for Pet Obesity Prevention also offers pet-owner tools for calculating calories and feeding amounts, checking treat calories, tracking weight and learning more about safe weight management. These resources can be useful alongside an individualized plan from your veterinary team.
Finding Healthy Ways to Keep Your Pet Active in Bellingham
For many dogs, regular activity can be an important part of reaching or maintaining a healthier body condition — and living in Bellingham offers plenty of opportunities to get outside together.
That doesn’t have to mean a strenuous hike. A regular neighborhood walk, a stroll along the South Bay Trail or through Boulevard Park, or time exploring one of the many trails around Bellingham and Whatcom County can all add activity to a dog’s routine. The appropriate amount and intensity of exercise will depend on your dog’s age, fitness, body condition and health.
For a dog with osteoarthritis, an orthopedic injury, respiratory disease or another medical condition, simply increasing the length or intensity of exercise may not be appropriate. Your veterinarian can help determine what type and amount of activity is safe.
Indoor cats benefit from regular activity too. Interactive play, climbing opportunities, food puzzles and other forms of enrichment can encourage movement while providing an outlet for natural behaviors.
The goal is to find forms of activity that are safe, sustainable and appropriate for the individual pet.
When Does a Pet’s Weight Become Relevant to Specialty Care?
Routine weight assessment and weight management generally begin with your family veterinarian. Regular wellness visits provide an opportunity to monitor changes in weight and body condition and make adjustments based on your pet’s individual health needs.
Sometimes, however, excess weight becomes one part of a more complex medical or surgical situation.
That’s often where BBVSH Bellingham becomes involved. Our specialty and emergency teams care for pets with complex medical and surgical conditions, and body condition may be one of many factors considered when planning diagnostics, treatment, anesthesia, hospitalization or recovery.
Working alongside your family veterinarian, our role is to address the condition that brought your pet to specialty or emergency care while considering the patient’s overall health.
Maintaining a healthy body condition won’t prevent every illness or injury, but it is one important way to support mobility, comfort and long-term health.
Frequently Asked Questions About Pet Obesity
Is obesity a medical condition in dogs and cats?
Yes. Obesity is a medical condition that can affect a pet’s mobility, breathing, metabolism, stamina and overall health. Excess weight is also associated with conditions including osteoarthritis, diabetes and insulin resistance, respiratory problems, heat intolerance, and orthopedic and mobility problems. At BBVSH Bellingham, weight may become particularly relevant when a pet is being treated for another complex medical or surgical condition.
Can excess weight make other health problems worse in pets?
Yes. Excess weight can add to the challenges of managing other medical conditions. For example, additional weight increases the load placed on painful joints in pets with osteoarthritis, while reduced mobility can make weight management more difficult. Body condition can also be an important consideration for pets with diabetes, respiratory disease, orthopedic injuries or other complex medical conditions.
Why does my pet’s weight matter if they need surgery?
Body condition can be one of several factors considered when planning anesthesia, surgery and recovery. For pets undergoing orthopedic surgery, maintaining a healthier body condition can also help reduce the ongoing mechanical load — the physical force placed on joints during movement. BBVSH Bellingham’s Surgery team considers each patient’s overall health when planning surgical and postoperative care.
How can I tell if my dog or cat is overweight?
Don’t rely on the number on the scale alone. Veterinarians use Body Condition Score (BCS) to assess features such as how easily the ribs can be felt, whether there is a visible waist and whether there is an abdominal tuck. They may also assess Muscle Condition Score (MCS) because a pet can carry excess body fat while also losing muscle.
Can an overweight dog or cat also have muscle loss?
Yes. Body fat and muscle mass are assessed separately. Senior pets and pets with chronic disease may lose muscle even when their overall weight changes very little — or while they are still overweight. Assessing both body condition and muscle condition provides a more complete picture of a pet’s health than body weight alone.
What is the safest way to help an overweight pet lose weight?
Start with your family veterinarian. They can assess your pet’s body and muscle condition, consider whether an underlying medical condition may be contributing to weight changes and establish an appropriate weight goal. A weight-management plan may include measured meals, appropriate daily calorie intake, changes to treats, regular activity and ongoing monitoring.
How much exercise should an overweight dog get?
There is no single amount of exercise that is appropriate for every overweight dog. Age, fitness, body condition and underlying health conditions all matter. A healthy dog may be able to gradually increase walks and play, while a dog with osteoarthritis, an orthopedic injury or respiratory disease may need a modified activity plan. Talk with your veterinarian before significantly increasing exercise if your dog has an existing medical condition.
When should an overweight pet be referred to a veterinary specialist?
Routine weight management generally begins with your family veterinarian. Specialty care may become relevant when excess weight is part of a more complex medical or surgical condition, such as an orthopedic injury, diabetes or another internal medicine condition, or when a pet requires surgery, advanced diagnostics or hospitalization. BBVSH Bellingham provides specialty and emergency care for pets with complex medical and surgical needs.
