Twenty years ago, Przewalski’s horse (last spotted in the wild in 1969) returned to Mongolia and China. In the mid-1980’s, number of horses in zoological gardens reached 500 and ideas of their reintroduction started to take shape. After a failure of the first plan, private foundations took up the initiative, helped to build acclimatization stations and arranged the air trans - port. Not only the acclimatization but also a behavioural adaptation of the horses proved to be crucial. Despite the definite success, the wild populations remain small, they are exposed to winters with extreme amounts of snow, and will face a risk of inbreeding in the future. and Evžen Kůs.