A social animal is a loosely defined term for an organism that is highly interactive with other members of its species to the point of having a recognizable and distinct society.
All mammals (and birds) are social to the extent that mothers and offspring bond. The term "social animal" is usually only applied when there is a level of social organization that goes beyond this, with permanent groups of adults living together, and relationships between individuals that endure from one encounter to another.
Animal social behavior and organization is studied in comparative psychology, ethology, sociobiology, behavioral ecology and computer science (artificial intelligence). Typical issues in social behavior are:
A few species, notably insects of the orders Hymenoptera (ants, bees and wasps) and Isoptera (termites) show an extreme form of sociality, involving highly organized societies, with individual organisms specialized for distinct roles. This form of social behavior is referred to as eusociality. Some vertebrates, most notably the Naked Mole Rat, are also eusocial.