Cat Weight Management: Obesity and Welfare

Feline obesity is one of the most common preventable welfare problems in companion cats, causing pain, reduced lifespan, and a diminished quality of life.

Key Facts

An estimated 25-40% of cats in developed countries are overweight or obese
Indoor cats and neutered cats are at highest risk of obesity due to reduced energy expenditure
Obesity significantly increases the risk of diabetes, arthritis, hepatic lipidosis, and urinary tract disease
Cats fed ad libitum (free choice) dry food are at much higher obesity risk than those fed measured meals
Even modest weight loss of 10-20% of body weight improves mobility and reduces pain in arthritic obese cats

Welfare Considerations

Obesity in cats causes direct welfare harm through pain from arthritis, difficulty grooming, increased heat intolerance, and reduced ability to engage in natural play and exploration behaviours. Obese cats show reduced activity and exploratory behaviour, indicating a diminished quality of life beyond the physical health impacts. Weight reduction in obese cats, when managed carefully to avoid hepatic lipidosis, consistently improves mobility, play behaviour, and owner-assessed quality of life. Prevention through appropriate portion control and feeding regime is far easier than treatment of established obesity.

What You Can Do

Ask your veterinarian to body condition score your cat at every visit
Switch from free-choice feeding to measured meals divided into multiple small portions per day
Engage cats in play and foraging activities to increase activity and mental stimulation
Seek veterinary guidance before implementing a weight loss diet to ensure safe calorie restriction