非常稀有的姬豬是世上體型最小的野豬，牠棲息於喜馬拉雅山南部山腳的草原上，是少數會築巢的哺乳動物。牠主要受棲息地被燒燬作農業用地所威脅，六十年代曾被認為已滅絕，直到1971年再度被發現。經過多年的保育工作及養殖計劃，自1995年已有85隻姬豬成功在印度的阿薩姆邦野放。

Pygmy hog is the smallest wild pig in the world and is also one of the rarest. it inhabits grasslands of the southern Himalayan foothills and is one of the few mammals that can build nest. its major threat was burning of grassland for agriculture. It was thought to be extinct in 1960s until it was rediscovered in 1971. with years of conservation work and breeding programme, 85 pygmy hogs were released to the wild in Assam, India since 1995. 

https://www.theguardian.com/environment/2021/mar/03/how-the-pygmy-hog-was-saved-from-extinction-aoe

https://www.durrell.org/wildlife/species-index/pygmy-hog/timeline/#myCarousel