Neuroethology ( from Greek νεῦρον neuron , `` nerve '' and ἦθος ethos , `` habit or custom '' ) is the evolutionary and comparative approach to the study of animal behavior and its underlying mechanistic control by the nervous system .
Neuroethology is the study of animal behavior and its control by the nervous system .
Ferguson and Beaver defined aggressive behavior as `` Behavior which is intended to increase the social dominance of the organism relative to the dominance position of other organisms '' Aggression takes a variety of forms among humans and can be physical , mental , or verbal .