Common yellow-toothed cavy Common yellow-toothed cavy The common yellow-toothed cavy (Galea musteloides) is a species of rodent in the family Caviidae, closely related to the domesticated guinea pig. It is found in Argentina, Bolivia, Chile, and Peru. It's karyotype has 2n = 68 and FN = 136. "G. musteloides" is the most common and widely found member of "Galea", and is present at elevations ranging from 20 to 5000 m above sea level. It has yellow teeth. A recent study reveals there are five subspecies of "G. musteloides": "boliviensis", "demissa", "leucoblephara", "littoralis" and "musteloides". These are recognized on the basis of pelage coloration,
Rock cavy and the mediodorsal nucleus, a large nucleus in the thalamus, which may provide the rock cavy with strong emotional learning, visual recognition, and object-reward association memory. This may explain why the animals are found to live in large groups. They can sometimes display homosexual behavior, with males courting males. Some paedophilical behavior has also been displayed, with adult males courting juvenile males. Each group has an alpha or dominant male and several females. The males are territorial, defending rock pile shelters against other adult males. These rock piles are built to impress the females. Once a females chooses a rock