TABLE 2 ∣.

Features of social monogamy.

Selective social interaction with an opposite-sex pair mate; may or may not include exclusive mating with the social partner

Selective aggression toward unfamiliar animals, perhaps to guard mating access, offspring or other resources

Biparental care and paternal provisioning for offspring

Communal living within the family group

Alloparental care of younger offspring in the family nest

Reduced sexual dimorphism

Species categorized as socially monogamous may display some or all of these traits.