Animal welfare assessment (Five Freedoms/Five Domains)

WSAVA guideline

Key findings

• Five Domains Model (Mellor 2017): four top-row domains — Nutrition, Environment, Health, Behaviour — each influence the fifth domain, mental state (no food in Domain 1 → hunger/thirst in Domain 5); "systematic, structured, comprehensive and coherent" assessment, extended to include positive welfare (Ch.2, p.21–22).
• Five Animal Welfare Needs (the recommended framework): (1) suitable environment, (2) suitable diet, (3) ability to exhibit normal behaviour patterns, (4) to be housed with, or apart from, other animals, (5) protection from pain, suffering, injury and disease (Ch.2, p.20–21).
• Why Needs over Freedoms: simple, and unlike the Five Freedoms "achievable and support positive welfare states" (Ch.2, p.20); welfare can be poor at both dietary extremes — malnutrition and obesity (p.21). Lineage: Brambell Report 1965 → FAWC Five Freedoms → adapted 2006 into the Five Needs for all domestic animals (Ch.1, p.15).
• Three overlapping welfare concepts (Fraser 2008): physical functioning, affective (mental) state, natural living — vets over-focus on physical health and may miss the others (Ch.1, p.11–12).
• Sentience: Webster's "feelings that matter"; animals seek positive and avoid negative experiences regardless of intelligence — suffering/pleasure are defined by the ability to feel, not think (Ch.1, p.12–13).
• Welfare-negative states: boredom (barren, predictable environments); frustration (restriction of natural behaviours); anxiety/fear/distress (chronic social tensions, unpredictability, over-stimulation) (Ch.2, p.22–23).
• Assessment rule: always combine physiological AND behavioural measures (Ch.2, p.28); input vs output measures (Fig. 6); BCS/MCS; traffic-light emotional-state system (Fig. 9); 4 Fs stress responses — flight, fight, freeze, fiddle/fidget (p.26).
• Validated pain scales: dogs — Glasgow CMPS-SF, Helsinki Chronic Pain Index, Canine Brief Pain Inventory; cats — Glasgow CMPS-Feline, UNESP-Botucatu MCPS (CSU acute scales non-validated); general QoL tools: Canine Symptom Assessment Scale, Pet Problem Severity Scale (Ch.2, p.30).
• Stress physiology: acute SNS (↑HR, ↑RR, ↑glucose, panting) vs chronic HPA/cortisol (weight loss, reduced immunity, cognitive impairment); adrenal exhaustion can give paradoxically low cortisol; cats = active vs passive responders to confinement (Ch.2, p.24–27).

Recommendations

• Use the Five Animal Welfare Needs as the practical assessment framework

  Expert consensus (AWC)

• Apply the Five Domains Model for structured assessment including positive states

  Expert consensus (AWC)

• Always combine physiological and behavioural measures when assessing an animal

  Expert consensus (AWC)

• Support science-based welfare monitoring — indices, staff training, up-to-date records; whole-of-life policies for very young/ill/injured/geriatric animals (Ch.2, p.20)

  Expert consensus (AWC)

• Promote positive welfare states, not merely absence of negatives

  Expert consensus (AWC)

• Assess every patient's condition/health/behaviour at least twice daily with objective pain and welfare measures (Ch.3, p.35–36)

  Expert consensus (AWC)

• Use validated pain scales routinely; avoid punishment; sedate/anaesthetise when humane handling otherwise impossible (Ch.3, p.34–35)

  Expert consensus (AWC)

• Act on the OIE position — veterinarians are the leading advocates for animal welfare (p.7); train low-stress handling (Ch.3, p.44)

  Expert consensus (AWC)

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