The Kadoorie Farm and Botanic Garden has invented its own camera traps to take high-resolution images in the dark.Photo: HandoutHong Kong scientists excited to find rare leopard cats thriving in Kadoorie Farm reforested area- Density of 0.87 leopard cats per sq km is second in the world only to that on island off Singapore- Year-long survey using cameras found nine leopard cats, including two juveniles, in Kadoorie areaThe Kadoorie Farm and Botanic Garden has invented its own camera traps to take high-resolution images in the dark.Photo: Handout"