Bear (Ursus arctos) Although it is the largest beast in Europe, its diet is mostly plant-based. The meat portion of its diet is mainly based on insect larvae, and it will gladly eat an animal carcass. This species requires a very large habitat to meet its needs. It has been recorded that about 20 individuals of this species live in the National Park at any given time. However, none of them has a habitat exclusively within the Park, but the Park is only a part of their movement area..