During the production of this video the global population of Bison bonasus wasnot even 10.000 pieces. That means this species was endangered. These animals need special treatment and mainly a natural environment.  There is a natural reserve European wilde which provides ideal conditions for not only the European bison (Bison Bonasus), but also elks (Alces alces), aurochs (Bos primigenius) and wild horses (Equus erus). This short film was made to spread awarness about this non-profit organization and encourage people to donate to their cause. In fact, every help counts, so if you like nature, you can send some donation to atransparent account of European wildlife. Moreover, you can also visit this area with one of their guides.