Research overview: SMART collar and IMU integration on pumas

This overview describes the integrated collar architecture that combined GPS with an inertial measurement unit of accelerometers and magnetometers to study puma movement and energetics at fine resolution. By logging high-frequency body motion alongside position, such collars let researchers reconstruct hunting events, classify behaviors, and estimate energy expenditure from free-ranging cats. The approach required laboratory calibration linking sensor signals to measured metabolism, then field deployment to capture natural hunts. The overview covers the engineering of synchronizing multiple sensor streams, managing the resulting data volume, and the welfare considerations of slightly heavier units. This integration marked a shift from asking where pumas go to quantifying what their movements cost, a central advance in carnivore physiological ecology.