Overweight in Dogs – Causes and Consequences
Excess weight in dogs is often seen as a sign of care from the owner and great love for the pet. In reality, it is neglect that can severely impact a dog's health and even shorten its life. Does your dog have just a few extra grams, or is it already obesity? Learn how to recognize it and why it is so important.
How to Recognize Overweight in Dogs
A dog is considered overweight when its optimal weight is exceeded by 15–29%. For mixed-breed dogs, it is difficult to determine an acceptable weight range. There are specific criteria that can help you assess whether your dog has a proper body weight:
- you can feel the ribs through the skin and a thin layer of fat,
- when looking at the dog from above, you can see a waist indentation,
- when looking at the dog from the side, the belly is higher than the chest.
A dog is considered overweight if the above criteria are not met. Obesity occurs when a dog's body weight exceeds the optimal weight by more than 30%.
Typically, overweight in dogs results from one or more factors, such as:
- improper diet – high carbohydrate content in food, oversized portions or too frequent meals, high-calorie treats and snacks between meals, or poorly balanced homemade food (including table scraps),
- advanced age,
- concurrent diseases,
- low physical activity,
- hormonal changes, for example after spaying/neutering,
- breed predispositions (e.g., Labrador Retrievers or Dachshunds).
Regardless of the cause, overweight always puts strain on a dog's body. In the next section, you will see the health consequences it can cause.
Health Consequences of Overweight in Dogs
Being overweight is not just a visual issue. A dog that weighs too much is at risk for many health problems that are much less likely in a dog with a healthy weight.
Joint and Mobility Problems
Overweight in dogs increases stress on bones and joints, leading to more frequent injuries, degenerative changes, and in predisposed breeds – e.g., Labradors, Bulldogs, or Shepherds – also dysplasia and patella injuries.
Significantly Shorter Lifespan
A 2018 study (University of Liverpool & WALTHAM Centre) showed that:
- in small breeds, overweight can shorten life by up to 2.5 years,
- in large breeds – on average by 5 months.
This means that overweight significantly reduces a dog's lifespan. Read our blog post about how long dogs live.
Breathing Difficulties and Circulatory Problems
In large breeds, obesity greatly increases the risk of heart and circulatory diseases. All overweight dogs, however, may experience breathing difficulties and increased fatigue during exercise. Both factors, combined with high body weight, also increase the risk of stroke.
Digestive Issues and Diabetes
Obese dogs are often at risk of diabetes, requiring regular veterinary monitoring and medication. Moreover, overweight animals frequently suffer from digestive issues, usually constipation. They may also experience pancreas and liver dysfunction, which can eventually lead to organ failure.
Overweight is not just an aesthetic issue – it is a real threat to a dog's health and life. It is worth taking action early, before problems become irreversible.
How to Support Your Dog in Losing Weight
Overweight in dogs is a real problem, and the most effective solution is… helping your dog lose weight. This may seem simple, but in practice it requires consistency and changes to daily habits.
Additionally, it is helpful to support your dog's digestive system with appropriate supplements based on natural ingredients, such as ImmuneControl. This product helps maintain a healthy gut flora, which directly improves digestion and regulates peristalsis. Beta-glucans additionally support immunity during this challenging period.
Owner support is crucial. Remember that successful weight loss in dogs largely depends on you. A properly balanced diet, well-chosen animal supplements if needed, patience, and a holistic approach will help ensure your pet’s health – and extend its life.
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Text prepared by
Paulina Grzybowska
Zoopsychologist, Vice President of the Foundation "Alternatywa dla zwierząt", instructor of bite prevention in educational institutions, and nosework instructor.
By profession, a journalist engaged in animal welfare. Privately, caretaker of several dogs and cats. She has been volunteering at a shelter for homeless animals for 18 years. She loves gaining new knowledge about dogs and cats and takes courses taught by experts from around the world.
Learn more about the author on her LinkedIn profile


