| Abstract: | Aid and cooperation in agonistic encounters have been studied in two groups of stumptail macaques keeping in the open-air cages of nature type. The basic agonistic ranks are found and the cases of aid in encounters are classified. A quantitative analysis using the coefficient reflecting the individual rank, kin and frequency of different aids is carried out. The existence of mechanisms of aggression removal within group is revealed, the role of individual ranks and kin in keeping stability in group is shown. |
