This area has a rocky terrain with large granite boulders that contain rifts and hollows where Kerodon species primarily live.

[citation needed] Like their relatives, the capybaras and the maras, members of the genus Kerodon are highly social.

[citation needed] Traditionally, the genus Kerodon has been considered a member of the subfamily Caviinae along with the guinea pigs and other cavies.

Molecular results have consistently suggested Kerodon is most closely related to the capybara, and the two evolved from within the Caviidae.

Using a molecular clock approach, Opazo[6] suggested Kerodon diverged from Hydrochoerus (the capybara) in the late Middle Miocene.