Temperature, proximity, heartbeat and digestion sensors and motion, activity, position and rumination detectors for livestock, in particular ruminants, not for veterinary or medical use or purposes; sensors, detectors, and controllers, namely, electric, pressure and position sensors, carbon dioxide, and piezoelectric detectors, electrical controllers; wireless receivers for temperature, proximity, heartbeat and digestion sensors for livestock, in particular ruminants, not for veterinary or me...