Christopher Sun, a veterinary anaesthesia and analgesia resident, carries a sick koala, under anaesthesia, named Wally, who was rescued by the animal rescue agency, Wildlife Information, Rescue and Education Service, also knows as WIRES, back to an enclosure to await pick-up by his carer, after receiving treatment at Sydney University Veterinary Teaching Hospital in Sydney, Australia, July 10, 2020. Wally was rescued on the outskirts of Sydney in an area where urban development is encroaching on koala habitat. REUTERS/Loren Elliott SEARCH "KOALAS ELLIOTT" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES