Common yellow-toothed cavy levels in males. Testosterone levels and aggression levels in males are not correlated. In fact females avoid above average aggressive males. 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
Animal rights the interests of the worse off more important than those of the better off. Another approach, virtue ethics, holds that in considering how to act we should consider the character of the actor, and what kind of moral agents we should be. Rosalind Hursthouse has suggested an approach to animal rights based on virtue ethics. Mark Rowlands has proposed a contractarian approach. Nussbaum (2004) writes that utilitarianism, starting with Jeremy Bentham and John Stuart Mill, has contributed more to the recognition of the moral status of animals than any other ethical theory. The utilitarian philosopher most associated with animal rights