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
Brazilian yellow-toothed cavy Brazilian yellow-toothed cavy The Brazilian yellow-toothed cavy, "Galea flavidens", is a cavy species from South America. It is found in Brazil. "Galea flavidens" is a yellow-toothed-cavy. "G. flavidens" lives in Brazil. This species is listed by the IUCN as Least Concern, in spite of the fact that there have been only few observations. Its habitat is widespread and the animal highly migratory, therefore there is no immediate threat to the population as a whole. As nearly with any other species, human expansion may become a problem in the near future. "G. flavidens" seem to be highly promiscuous, females mate regularly