AP BIOLOGY

Detailed explanation-1: -Aggression is defined as threats or harmful actions directed toward another individual and can include threat displays, lunging, growling, snarling, snapping, and biting. “In animals, aggressive behaviors are a means of communication."

Detailed explanation-2: -Biologists commonly distinguish between two types of aggressive behaviour: predatory or antipredatory aggression, in which animals prey upon or defend themselves from other animals of different species, and intraspecific aggression, in which animals attack members of their own species.

Detailed explanation-3: -An example of an innate behavior is: ducks flocking to be fed, birds chirping when hatched, bears learning how to catch fish, or babies speaking words.

Detailed explanation-4: -Another classic example of a fixed action pattern comes from the three-spined stickleback, a small freshwater fish. During the breeding season, male sticklebacks develop a red belly and display innate aggressive behavior towards other males.