Facial recognition isn’t just for tracking people anymore. Software that can identify the faces of animals is increasingly being used to monitor everything from exotic species like tigers and elephants to more common creatures like cows and pigs.

While the use of facial recognition grows in the U.S. for law enforcement purposes, in China the use of facial recognition software is increasing to monitor pigs in an effort to increase pork production. The AI-powered software is being used to track diseases, make farms more efficient and help protect endangered species.

“If they’re not happy and they’re not eating well, in some cases you can predict whether the pig is sick,” Jackson He, CEO of Yingzi Technologies, which developed the software, told The Guardian. Last year, the company unveiled its wireless network “Future Pig Farm” system, designed to reduce direct contact between humans and pigs and curb the spread of swine fever and other infections.

Yingzi's software analyzes the pigs' snouts, ears and eyes to tell them apart. It can also monitor the pigs' heart rate and sweat rate, and also check the coughing of an individual pig. The system is designed to monitor pigs to prevent them from getting sick or malnourished.