Blundell, Gail M.; Ben-David, Merav - In: Behavioral Ecology 13 (2002) 1, pp. 134-141
We evaluated factors influencing social organization in coastal river otters (Lontra canadensis) to test two hypotheses: group formation is an antipredation strategy, or, alternatively, group information is related to cooperative foraging. Data on group size, group composition, and sociality...