Rock cavy The rock cavies belong to the subfamily Caviinae along with the guinea pig, desert cavy, and cuis. Rock cavies are found in dry, rocky areas with low, scrubby vegetation, and they like to reside close to stony mountains and hills. In appearance and habits they closely resemble the unrelated rock hyrax of Africa (an example of convergent evolution). They usually shelter in crevices. They are reportedly seen at day and night, but are most active at dawn or dusk. Animals most active at this time are known as crepuscular. Studies show that there is a direct link between the retina
Muenster yellow-toothed cavy Muenster yellow-toothed cavy The Muenster yellow-toothed cavy (Galea monasteriensis) is a species of rodent in the family Caviidae. It is known only from one location in Valle Hermoso in the Bolivian Andes, at an elevation of 2557 m. Specimens from this location were shipped to Muenster, Germany in 1997 for laboratory research, where the species was recognized and described. "Galea monasteriensis" was recognized on the basis of morphological, behavioral, and reproductive differences from related species. However, its habits in the wild have not been studied. Unlike the :common yellow-toothed cavy and :Spix's yellow-toothed cavy, Muenster yellow-toothed cavy males engage in