definition of ethologist
A range of animal behaviours. Ethology is the scientific and objective study of animal behaviour, usually with a focus on behaviour under natural conditions, and viewing behaviour as an evolutionarily adaptive trait.
Definition of etiology. plural. etiologies. 1 : cause, origin; specifically : the cause of a disease or abnormal condition. 2 : a branch of knowledge concerned with causes; specifically : a branch of medical science concerned with the causes and origins of diseases.