Living With Arthritis
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How fast should my dog lose weight?

Excess weight is the most powerful — and most fixable — driver of arthritis pain in pets. A practical guide to body condition scoring and safe weight loss for dogs, cats, horses and camelids. In dogs, studies show weight loss of 6-9% of body weight measurably reduces lameness — an effect comparable to starting an NSAID. The mechanics are simple: less load per stride, thousands of strides per day. The same principle holds for cats, horses and camelids.

Last updated 2026-07-04. This is general information, not a substitute for personalised medical advice.

Frequently asked questions

How fast should my dog lose weight?

About 1-2% of body weight per week. A 30 kg Labrador losing 300-600 g weekly will reach a 4 kg target in roughly 2-3 months.

What's the easiest first step?

Measure meals with digital scales instead of a scoop, and swap treats for part of the daily food ration or vegetables like carrot (dogs). Measuring alone typically cuts 10-20% of calories.

Sources and references

  1. RSPCA: Pet health advice
  2. PDSA: Arthritis in pets

Sources and further reading