Body Condition

There’s a persistent trend in Australia toward keeping dogs and horses above their healthiest body condition. This isn’t about love or care; it’s about a cultural norm that science doesn’t support.

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Working breeds, especially the Border Collie, were developed for movement efficiency, endurance, pattern-based work, and cooperative partnership. Their bodies are genetically and neurologically optimised for lean athleticism, not high mass.

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Why a defined waist is inherited biology, not aesthetics

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Domestic dogs descend from wild canids shaped by natural selection for:

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• covering long distances with minimal energy cost

• dissipating heat effectively during work and travel

• rapid neuromuscular development in youth

• survival through efficient biomechanics, not fat stores

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A visible waist and abdominal tuck evolved because they reduce locomotor cost, support oxygen efficiency, and protect the developing frame during high activity.

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How excess mass changes the body’s biology — even before obesity

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Weight above ideal increases risk through well-established physiological pathways:

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1. Orthopaedic load amplification

Extra mass increases compressive force across joints, tendons, ligaments, and growth plates. In young, highly active dogs, this can:

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• increase developmental stress on the hip joint

• accelerate cartilage microdamage

• raise the probability that genetic predispositions (e.g., hip dysplasia, elbow incongruence) become clinically expressed

• contribute to earlier onset osteoarthritis, even without major lameness

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2. Inflammatory signaling from adipose tissue

Fat tissue is not inert. It releases pro-inflammatory cytokines including TNF-α, IL-6, and C-reactive protein (CRP), contributing to:

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• heightened pain sensitivity

• chronic low-grade systemic inflammation

• slower recovery from soft tissue strain

• increased arthritis severity once established

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3. Metabolic strain and stress-response alteration

Dogs carrying excess mass show higher incidence of:

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• insulin resistance

• impaired cortisol recovery after stress

• increased oxidative load

• elevated risk of endocrine and metabolic disorders

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This means that even a dog who looks fine but carries extra weight may already be experiencing biological stress they can’t behaviourally mask.

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Behaviour and body condition intersect

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Border Collies are neurologically wired for high engagement and dopamine-driven task cycles. A lean, fit body supports:

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• clearer arousal switching

• improved cue responsiveness

• better stamina for thinking and learning

• reduced frustration sensitivity

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A less active or “easy-keeper” dog simply needs individualised calorie balance and purposeful movement, not unrestricted feeding.

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Body condition checkpoints every owner can use

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Assess your dog weekly, not yearly:

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• Can you see a clearly defined waist from above?

• Can you feel the ribs easily without pressing?

• Is there a distinct abdominal tuck behind the ribcage, rising toward the hindquarters, not level or sagging?

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If not, your dog isn’t failing you — they’re giving you early biological feedback.

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Feeding principles grounded in science

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• Appetite alone is not a measure of optimal health

• Calories must match age, fitness, metabolism, and drive

• Nutrition should evolve with lifestyle, workload, and season

• Unlimited feeding increases risk, but purposeful feeding protects potential

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Take-home truth

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A lean dog is biologically safer, mechanically sounder, and neurologically clearer.

A heavy dog is carrying avoidable metabolic and orthopaedic risk, often silently.

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Condition is not opinion, nor aesthetics, nor a reflection of care.

It is a biological feedback system that, when respected early and adjusted individually, allows dogs to:

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• move better

• learn faster

• recover well

• work cooperatively

• live longer, healthier lives

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That is how inherited potential becomes a dream dog built to last. Sound in body, capable in mind, fit for work, and supported by science-based welfare.