<p>The relatively stiff gait of modern humans minimizes the muscular work done to move the lower limbs and the center of mass. Nonhuman primates, and perhaps our earliest ancestors, use a form of bipedalism in which the ...

<p>A central theme in animal ecology is the study of the relationship between ecology and behavior. This dissertation demonstrates how ecological parameters, particularly food and weather variables, correlate with ranging, ...

<p>Delacour's langurs (<italic>Trachypithecus delacouri</italic>), one of the six limestone langur taxa of Southeast Asia, inhabit isolated, rugged limestone karst mountains in Northern Vietnam, although the reason for ...

<p>Most vertebrates possess some overlap of the right and left visual fields. The region of overlap, the binocular field, contains unique visual cues that provide an accurate estimate of distance and three-dimensional ...

<p>Despite early neglect, recent studies of sexual selection have shown a renewed interest in female reproductive strategies. Clearly the traditional portrayal of female animals as passive participants in mating is incorrect, ...