Koalas face a confluence of welfare crises including chlamydia disease, habitat loss, and climate change that are pushing eastern Australian populations toward local extinction.
Koala welfare is severely compromised by chlamydia disease, which causes chronic pain from urinary tract inflammation and reproductive tract scarring, blindness from conjunctivitis, and systemic illness. Affected animals suffer for months or years before death if untreated. Wildlife hospitals treat thousands of koalas annually for chlamydia, burns from bushfires, car strikes, and dog attacks. Climate change reducing eucalyptus nutrition forces koalas to consume more leaves for equivalent nutrition — time-consuming in animals already highly specialized for a low-energy diet. The convergence of these pressures has created a welfare and conservation crisis requiring urgent, coordinated intervention including vaccination programs, habitat restoration, and vehicle speed reduction near known koala corridors.