Krekenava Regional Park is the only protected area in Lithuania where you can see freely pasturing the largest European beast – the European bison (Bison bonasus L.). The revival of the bison in Lithuania in the year 1969 started precisely here, in Pašiliai bison paddock. You can observe these great beasts in the Bison Paddock of Pašiliai. There is a special observatory site for this purpose, next to the Cognitive Forest Trail.