Wearable technology for cattle. Moocall is an agri-tech company that has created two unique devices for livestock farmers to use in their herd. The first was a sensor that you strap to a pregnant cows tail, the cow will then send the farmer an SMS two hours, and one hour prior to giving birth. This has proven to both free up farmers time and also increase live births and farm profitability. The latest is a heat detection system for cows and heifers. It comes in two parts - an electronic collar designed to be worn by a bull, and a specially designed Moocall RFID ear tag to be worn by each of the cows. The system then alerts the farmer when the cow enters a standing heat and from there the farmer can tell the best time for her to be submitted for Artificial Insemination