Companion Animal Obesity: A Growing Welfare Crisis

Obesity in companion animals has reached epidemic proportions and causes significant welfare harms through reduced quality of life, increased disease risk, and shortened lifespan.

Key Facts

An estimated 55-60% of dogs and cats in Western countries are overweight or obese
Obesity causes or exacerbates arthritis, diabetes, respiratory disease, and skin problems in companion animals
Overweight animals show reduced willingness to exercise, reduced grooming ability, and signs of chronic discomfort
Owners frequently underestimate their pet's weight due to normalization of overweight animals in their social environment
Body condition scoring on a 9-point scale is the primary clinical tool for assessing healthy weight
Prescription weight loss diets with caloric restriction and increased fiber achieve weight loss in most cases when owners comply

Welfare Considerations

Obesity in companion animals is a welfare problem that originates almost entirely in human behavior. Animals cannot self-regulate food intake appropriately when food is freely available in quantities exceeding their needs — they eat what is provided. An obese dog or cat experiences daily welfare costs: joints that ache with movement, reduced ability to engage in normal behaviors, heat intolerance, and increased disease risk. Overfeeding from love is paradoxically an act of harm, and helping owners understand this without blame or shame is a key challenge for veterinary professionals.

What You Can Do

Learn to body condition score your pet: you should be able to feel but not see ribs, with a visible waist
Feed measured meals rather than ad libitum feeding, adjusting quantity based on body condition
Treat calories count in your pet's daily allocation — reduce main meals to account for treats
Encourage regular exercise appropriate to your pet's species, breed, and age
Consult your vet if your pet needs to lose weight — the rate of weight loss matters and crash diets can be harmful
Avoid normalizing overweight as healthy — seek a second opinion if your vet is not addressing weight concerns