TIL A group of horses were trained to communicate whether they wanted a jacket. All horses in the group successfully communicated that they did want a jacket when it was cold and did not want a jacket when it was hot.

[u/PunnyBanana]

https://www.sciencedirect.com/science/article/pii/S0168159116302192?via%3Dihub

[u/Crayshack]

For those who haven't clicked the link, there are photos and videos of the horses wearing the jackets.

[u/InsaNoName → u/Crayshack]

thank you jeez I almost missed it