Computerized and electronic systems for cattle estrus detection and monitoring, namely, dairy herd computerized management systems used to gather and analyze data on cattle, all comprised of a personal computer, downloadable computer software and a control unit, for estrus detection, rumination monitoring and for processing and analyzing the collected data; computerized and electronic systems for cattle estrus detection and monitoring, namely, computerized systems comprised of computers and downloadable computer software all for controlling, handling and managing dairy herds particularly for breeding control, selection gates, feed control; computerized and electronic systems for cattle estrus detection and monitoring, namely, electronic devices for cattle identification and monitoring and parts and accessories therefore, namely, electric sensors, transponders and data receivers, data terminal with display, antennas and optical readers; humanoid robots with artificial intelligence; data processing and analysis apparatus, namely, computerized and electronic systems for monitoring animals and image and video processing equipment and systems comprising cloud-base solution computer software and hardware, electric sensors implemented in both ear and neck tags, electronic transmitters and receivers; computerized animal face recognition device, namely, biometric iris scanners; computerized tracking systems, containing attendance recorders and cattle monitoring and recording devices and apparatus in the nature of Downloadable cloud-base solution computer software and hardware, electronic sensors implemented in both ear and neck tags, transmitters and receivers