This tracker attaches to your pet’s collar to monitor location and activity, charting trends over time to better understand your pet’s health.

Location works best if near your phone. Alerts lag when outside of safe zones. Mistakenly alerted that my cat escaped three times during testing. App needs to be open on phone to work properly.

As a helicopter pet parent, for many years I attached an Apple AirTag to my cat Basil's collar for extra peace of mind. But with location inaccuracy, no real-time tracking, and dependence on Bluetooth range, this wasn’t an ideal solution. Many pet-tech companies are now developing devices that use cellular coverage to enable real-time location tracking, as well as integrating health-monitoring features into the trackers.

These new smart health collars are sort of like smart rings for people, which let wearers track important metrics like activity, health, and sleep. On the Fi Mini, the connected phone app lets you view daily stats without needing a wearable screen, unlike a smartwatch or ...