In Japan, an AI app is detecting pain in cats

While pets are an integral part of many families around the world, these companions have an outsize role in Japan due to the aging population and plummeting birth rate.

Mayumi Kitakata frets about the health and well-being of Chi, her stoic housemate who enjoys treats, indulges a bit too much in the catnip, and about 14 is getting on in years for a feline.