The data below are part of the European H2020 project ICAERUS regarding the livestock monitoring use case. More information here : https://icaerus.eu/ Counting sheep is particularly challenging for farmers with thousand of animals in a flock. Our objective is to develop methodology based on computer vision to counting sheep when they are passing in a corridor to coming back in a park or a pen. This first dataset will support our work. The dataset encompasses 16 .MP4 videos from drone (DJI mavic 3 Enterprise or Thermal) of around 50 sheep crossing a gate. The videos were taken from 5m to 10m of height and to an horizontal distance of the gate from 0m to 10m. More videos will be published in the next months. For more information, please contact: adrien.lebreton@idele.fr The authors are opened to any collaborations on this topic.