Chronic conditions
Pet Obesity: The Most Common Preventable Disease
Why excess weight shortens life, how to assess body condition honestly, and how to manage safe weight loss.
Why it matters
Obesity is associated with osteoarthritis, diabetes mellitus in cats, respiratory compromise, anaesthetic risk, urinary disease and reduced lifespan. A landmark lifetime study in Labrador Retrievers found that dogs kept lean lived around two years longer than their overweight littermates.
Assess body condition, not the scales alone
Use the nine-point body condition score: you should be able to feel ribs easily under a thin layer of fat, see a waist from above, and see an abdominal tuck from the side. Most owners systematically underestimate their own animal's score.
Safe weight loss
Target around one to two percent of body weight per week in dogs and cats. Rapid weight loss in cats risks hepatic lipidosis, a serious liver condition — never crash-diet a cat.
- Weigh food with kitchen scales; measuring cups are wildly inaccurate
- Count treats within the daily calorie total, keeping them under 10%
- Ask your vet to calculate calorie targets rather than following pack guidelines
- Use puzzle feeders to slow eating and increase activity
- Recheck weight every two weeks and adjust
Rule out medical causes
Hypothyroidism in dogs and Cushing's disease can cause weight gain, and arthritis reduces activity. A veterinary assessment before starting a diet plan avoids treating a symptom while missing the cause.
References
- Kealy et al., Effects of diet restriction on life span and age-related changes in dogs — Journal of the American Veterinary Medical Association, 2002
- WSAVA Body Condition Score charts — World Small Animal Veterinary Association