Testosterone is often considered a critical regulator of aggressive behaviour. There is
castration/replacement evidence that testosterone indeed drives aggression in some …

While non-human primate studies have long been conducted in laboratories, and more
recently at zoological parks, sanctuaries are increasingly considered a viable setting for …

Highlights•We examined rank, testosterone, aggression and creatinine in male
chimpanzees.•Urinary testosterone levels were positively associated with male dominance …

Castration is commonly used to control the behavior of companion animals and livestock, yet
there have been few longitudinal studies of its effects. Despite the ubiquity of this surgery in …

Background Aggressive behaviour (AB) may occur in patients with different neuropsychiatric
disorders. Although most patients respond to conventional treatments, a small percentage …

The management of free-roaming horses (Equus ferus) and burros (E. asinus) in the United
States has been referred to as a “wicked problem” because, although there are population …

The ability of animals to survive dramatic climates depends on their physiology, morphology
and behaviour, but is often influenced by the configuration of their habitat. Along with …

Maternal care towards dead infants has been observed in many wild and captive mammals,
but the consequences of this behavior for social interactions and the physiological status of …

Simple Summary The overlapping presence of free-ranging long-tailed macaques (Macaca
fascicularis) and humans in tropical and southeast Asian countries, for example, Thailand …

Psychological sex differences have been studied scientifically for more than a century, yet
linguists still debate about the existence, magnitude, and causes of such differences in …