Labor shortage and low productivity were threatening the future of the Kato farm, on the Japanese island of Hokkaido. That was until the Kato family invested $2 million in robots that milk cows while offering them tasty treats. Photo/Video: Karan Deep Singh/WSJ

Don’t miss a WSJ video, subscribe here: http://bit.ly/14Q81Xy

More from the Wall Street Journal:
Visit WSJ.com: http://www.wsj.com
Visit the WSJ Video Center: http://wsj.com/video

On Facebook: https://www.facebook.com/pg/wsj/videos/
On Twitter: https://twitter.com/WSJvideo
On Snapchat Discover: http://on.wsj.com/2ratjSM

Read more: youtube.com.