Sumatran orangutans are critically endangered due to palm oil plantation expansion and other deforestation, with rescued and confiscated individuals requiring long-term rehabilitation before potential forest release.
The welfare suffering of orangutans from habitat loss operates at both individual and population scales. Individually, orangutans displaced by deforestation face starvation, conflict with plantation workers, and capture for the pet trade. Infants whose mothers are killed experience profound psychological trauma, requiring years of specialist rehabilitation. At the population level, the long reproductive interval means that even low mortality rates can cause populations to decline irreversibly. Addressing the palm oil supply chain — the primary driver of Sumatran deforestation — is the most impactful welfare intervention available to consumers in high-income countries.