Definitions for "Abnormal behaviour"
Patterns of emotion, thought, and action deemed pathological for one or more of the following reasons: infrequent occurrence, violation of norms, personal distress, disability or dysfunction, and unexpectedness.
Behaviour that deviates from a defined, comparable standard. Such a standard may be a behavioural inventory typical for a given genotype, age group, sex, nutritional level, housing condition or management system, etc.