Seiji Taniguchi, 64, smiled as he put a tray of sweet potatoes and nutmeg in front of one of the cages in his farm.

"Momo, is it good?" he asked. Momo, a female Japanese macaque, squeaked in joy and nibbled the food.

It is here at Sankyu Bokujo (Thank You Farm) in the mountains of Sanda, Hyogo Prefecture, where abandoned animals like Momo are spared euthanasia, living out the rest of their lives under the care of Taniguchi and his wife, who opened the farm in 1990.