Nälkäveren

Nälkäveren, also known as "hunger rage," is a phenomenon observed in certain species of animals, particularly in primates, where individuals exhibit aggressive behavior when they are hungry. This behavior is thought to be an evolutionary adaptation that increases the chances of survival by ensuring that the hungry individual secures food before others can. The term was first coined by the British zoologist and primatologist, Robert Hinde, in the 1970s.

The underlying mechanism of nälkäveren is believed to be a combination of physiological and psychological factors. When an animal is hungry, its body produces stress hormones like cortisol, which can increase aggression. Additionally, the brain's reward centers, which are activated by food, may be less responsive, further heightening the animal's frustration and aggression.

Nälkäveren has been extensively studied in primates, including chimpanzees, gorillas, and baboons. In these species, hungry individuals often exhibit increased aggression towards both conspecifics and even towards humans. This behavior is not limited to primates; it has also been observed in other animals, such as dogs and even some birds.

The phenomenon of nälkäveren highlights the complex interplay between hunger, stress, and aggression in animals. It serves as a reminder of the intricate balance between survival instincts and social behavior. Understanding nälkäveren can provide valuable insights into the evolutionary pressures that shape animal behavior and may have implications for our understanding of human aggression as well.