Landrace breeds preserve the identity of this area. They are characterised by their adaptation to the extreme conditions of survival outside in all weathers. They have strong constitutions, as well as a social component to their behaviour, both essential for the preservation of pasturing in the great complexes of commonly owned pasturelands. Lonjsko Polje is with justice considered an area with an exceptionally large concentration of landraces, which have come into being and developed their genetic heritage here.
Landrace breeds in Lonjsko Polje Nature Park are the Croatian Posavac and Croatian Draughthorse, the Turopolje pig, the Slavonian-Syrmian Podolian cow, the Posavina goose, and the Posavina hound.
A signatory to the convention on biological diversity of 1992, the Republic of Croatia put the Turopolje pig among its most endangered landrace breeds.