The territory of the Terras de Cavaleiros Geopark stands out for its high biodiversity, a result of the diversity of natural and semi-natural habitats present in the region. Forests, rivers, hills and agricultural areas create an environmental mosaic that supports a wide variety of animal and plant species.

This territory is home to emblematic species such as the Iberian wolf, the otter, birds of prey and endemic plants that contribute to the geopark's natural wealth. Its integration into protected areas and the Natura 2000 network reinforces the commitment to the conservation of these unique ecosystems.