Why Your Dog's Weight Matters: A Guide to Healthy Weight Management

According to the PDSA, over half of dogs in the UK are overweight or obese. It's become so common that many owners don't even recognise it, and studies show that most owners of overweight dogs describe their pet as being a "normal" weight. But carrying extra weight isn't just a cosmetic issue. It's a serious health concern that can shorten your dog's life by up to two years.

Why Weight Matters So Much

Excess weight puts strain on every system in your dog's body:

• Joint problems: extra weight accelerates arthritis and makes existing joint conditions significantly more painful
• Heart disease: the heart works harder to pump blood through a larger body
• Diabetes: overweight dogs are at much higher risk of developing Type 2 diabetes
• Reduced lifespan: a landmark Purina study found that dogs kept at a lean weight lived an average of 1.8 years longer than their overweight siblings
• Lower quality of life: overweight dogs are less active, less playful, and often less happy

How to Check Your Dog's Weight

The number on the scale only tells part of the story, because healthy weight varies hugely between breeds and individuals. Instead, use the Body Condition Score (BCS) system:

• Ribs: You should be able to feel your dog's ribs easily with light pressure, without pressing hard. If you can see them clearly, your dog may be underweight. If you can't feel them at all, they're likely overweight
• Waist: Looking from above, there should be a visible narrowing behind the ribs. No waist? That's a concern
• Tummy tuck: From the side, the abdomen should slope upward from the chest to the hindquarters. A straight or sagging belly line suggests excess weight

Common Causes of Weight Gain

Weight gain rarely happens overnight. The most common culprits are:

Overfeeding: Many owners follow packet guidelines without adjusting for their dog's actual activity level, age, and metabolism. Treats often go unaccounted for, and they can add up quickly.

Insufficient exercise: As dogs age or as owners' schedules change, walks often get shorter or less frequent without a corresponding reduction in food.

Neutering: Spaying and neutering can reduce metabolic rate by up to 30%. If food portions aren't adjusted after surgery, weight gain is almost inevitable.

Medical conditions: Hypothyroidism and Cushing's disease can both cause weight gain. If your dog gains weight despite a controlled diet, consult your vet.

Managing Your Dog's Weight

The good news is that weight management is straightforward with consistency:

• Weigh regularly: monthly weigh-ins help you catch changes early, before a few hundred grams becomes a few kilos
• Measure food precisely: use scales or a measuring cup rather than eyeballing portions
• Count treats: treats should make up no more than 10% of daily calories. Consider using pieces of regular kibble as training rewards
• Adjust for life changes: reduce portions after neutering, during winter (less exercise), or as your dog ages

Keeping a food diary and weight log makes it much easier to spot trends and stay on track. When you can see the data over weeks and months, small adjustments become obvious before they turn into big problems.