For instance , the dog is presented to a familiar and then an unfamiliar person in order to measure sociability or aggression .
Tests : the dog is submitted to a set of tests and its reactions are evaluated on a behavioural scale .
The dog is presented to a familiar and then an unfamiliar person in order to measure sociability or aggression .
Tests : the dog is submitted to a set of tests and its reactions are evaluated on a behavioural scale .