Fred and Joe, two unrelated, mature male gorillas, encounter one another. Fred is courting a female. Fred grunts as Joe comes near. As Joe continues to advance, Fred begins drumming (pounding his chest) and bares his teeth. Joe then rolls on the ground on his back, gets up, and quickly leaves. This behavioral pattern is repeated several times during the mating season. Choose the most specific behavior described by this example.
A) agonistic behavior
B) territorial behavior
C) learned behavior
D) fixed action pattern

Question

Quizplus · Accepted Answer

The behavior described is an example of agonistic behavior, which is the interaction between individuals, usually of the same species, that involves threats, displays, or actual combat to establish dominance or determine access to resources. In this case, Fred is exhibiting aggressive behavior towards Joe to protect his mating partner and establish his dominance. Joe's submissive behavior, rolling on his back and leaving, indicates that he recognizes Fred's dominance.

Fred and Joe, Two Unrelated, Mature Male Gorillas, Encounter One