Why do capybaras have big heads?

Capybaras have relatively large heads in proportion to their bodies to accommodate their large jaws and teeth, which are essential for their herbivorous diet. This head structure allows them to efficiently chew tough grasses and aquatic plants. Additionally, their head shape aids in their social behaviors and interactions within groups, as they are highly social animals. Overall, their big heads contribute to their survival and adaptation in their natural habitats.