The term has many applications, the most objective being a statistical interpretation focusing on qualitative or quantitative deviations from expected frequencies, means, or intervals. Such a standard may be a behavioral inventory typical for a given genotype, age group, sex, nutritional level, housing condition, or management system, etc. The swallowing of air. Excessive aerophagia, commonly occurring during habitual cribbing in horses, can lead to serious digestive problems and is considered a dangerous vice.
Aggregation is distinguished from grouping induced by social factors.
Compare Flocking, Herding A00616. In special cases, a nonliving object or the instigator itself may be the focus of the aggressive action. It encompasses the actions of both the instigator and the victim. The signal has a high arousal potential for conspecifics, and often for other animals as well. One stallion may confront an approaching male from another band, while the other stays with his group.