Linked from
The 10 pages that link to Social behavior, each with the reason it gives.
Risso’s dolphinRelated: Risso’s dolphins form groups whose size and composition vary.
KleptothermyRelated: Access to warmth can influence when and how animals associate.
OctodonRelated: Captive and wild degus provide a prominent rodent case for sociality.
TahrRelated: Tahr form groups whose size and composition vary by sex and season.