Chronic wasting disease is a prion disease spreading through wild deer populations, causing prolonged suffering. Understanding its spread and welfare implications is critical.
CWD represents a significant wildlife welfare crisis with no clear intervention pathway at the population level. Individual deer with late-stage CWD experience severe suffering — weight loss, neurological deterioration, and inability to perform normal behaviors. Unlike many wildlife diseases, CWD does not cause rapid death; instead, it imposes a prolonged period of decline that may last months. Managing encounters with visibly symptomatic deer by reporting to wildlife authorities enables humane euthanasia when appropriate.