Climate change is creating a welfare crisis for billions of animals — through heat stress, habitat destruction, extreme weather events, and disease emergence. Animal welfare must be integrated into climate adaptation planning.
Climate change is not a future welfare threat — it is a present one. The 1.5°C warming threshold was effectively breached in 2024-2025 for extended periods. The welfare consequences for animals — domestic and wild — are already severe and will escalate significantly with continued warming. Understanding and addressing climate-welfare intersections is one of the most urgent challenges in 21st century animal welfare.
Heat stress is the most direct and quantifiable climate welfare impact on farmed animals. Cattle, pigs, and poultry are all susceptible to heat stress above species-specific thresholds. Key impacts:
Welfare-positive adaptation includes: shading and water sprinklers for outdoor animals, improved ventilation in buildings, reduced stocking density, dietary modifications, and breed selection for heat tolerance.
Climate-driven habitat change is creating welfare emergencies for wild animals. Species forced to move as habitats shift experience: starvation in unfamiliar environments, exposure to novel predators, physiological stress from climate mismatch, and collision with human infrastructure during migration. The IPCC estimates 20-30% of species face increased extinction risk at 2°C warming — each extinction represents the welfare losses of all surviving members of that species as populations decline.
Wildfires (Australia 2019-2020: estimated 3 billion animals killed or displaced), floods, hurricanes, and ice storms create acute welfare emergencies at massive scale. Australia's 2019-2020 fires destroyed habitat across 18 million hectares, with devastating welfare impacts including: burns, starvation, entrapment, and long-term habitat loss requiring extended recovery. Wildlife emergency response programs — triage, rehabilitation, food supplementation — require welfare-focused rapid response capacity.
Interestingly, higher welfare pasture-based livestock systems often have lower carbon footprints per unit product than intensive systems and better climate resilience. Pasture-based systems: sequester carbon in well-managed grasslands; are less vulnerable to supply chain disruptions; and provide animals with natural behavioral expression and outdoor thermoregulation opportunities. This welfare-climate alignment offers a policy narrative for simultaneous welfare and environmental improvement.
Climate change is expanding the range of vector-borne diseases with major animal welfare implications. Bluetongue virus (transmitted by Culicoides midges) has moved into Northern Europe; lumpy skin disease (cattle) has spread west; African horse sickness threatens European horse populations. These emerging diseases cause direct suffering and require control measures (culling, vaccination) with their own welfare costs.
Climate change and animal welfare are inextricably linked. Addressing climate change is an animal welfare imperative — and animal welfare improvements (particularly reduced intensive livestock production and shift to plant-based foods) contribute to climate mitigation. Integrating animal welfare into climate adaptation planning — from livestock heat stress management to wildlife emergency response — is an urgent policy priority.