A city in Nagano is combining modern technology with specially trained dogs to chase away wild monkeys that have ventured from nearby mountains to ruin crops and damage property.

In April, the city of Omachi, Nagano Prefecture, began using GPS to monitor the movement of wild monkeys that have devoured crops such as apples and buckwheat seeds, annoyed local residents with their feces and urine and damaged roof tiles.

"There have been an increasing number of abandoned crop fields behind houses and wildlife habitats are believed to have come closer to where people live," a city official said.