Wildlife Disease and Animal Welfare

Infectious diseases in wild animal populations cause significant individual welfare harm and can devastate populations — raising questions about human responsibility to intervene.

Key Facts

Rabbit haemorrhagic disease, myxomatosis, chytridiomycosis (affecting amphibians), and white-nose syndrome (bats) all cause mass mortality events
Many wildlife diseases have been introduced or exacerbated by human activity including habitat fragmentation and climate change
Oral vaccination delivery systems exist for rabies and have dramatically reduced rabies in European fox populations
Chytridiomycosis has caused the extinction of over 90 amphibian species since the 1970s
Disease surveillance in wildlife populations is important for early detection and response

Welfare Considerations

Wildlife disease causes enormous individual suffering at scale. Animals dying from chytridiomycosis, white-nose syndrome, or myxomatosis experience prolonged, painful deaths that would never be accepted in domestic animals. Human responsibility for some of these disease introductions (chytrid fungus was spread globally through the amphibian trade) creates a moral obligation to respond. Oral vaccination programmes for rabies demonstrate that disease control in wild populations is feasible and impactful. Investment in wildlife disease surveillance and response capacity protects both individual animal welfare and population viability.

What You Can Do

Support wildlife disease research and early detection surveillance programmes
Practise biosecurity when visiting wildlife areas to avoid spreading disease between populations
Never release pet amphibians into the wild where they could introduce chytrid fungus
Support oral vaccination programmes for wildlife diseases where available
Engage with the ethics of wildlife disease intervention in conservation and welfare contexts