Table 2: Demographics of attacking groups.

From: Observations of severe and lethal coalitionary attacks in wild mountain gorillas

Group DemographicsMales (8+ yrst)Females (8+ yrs)Subadults & JuvenilesInfants (<3.5 yrs)
2004 (Group Beetsme)84, 4, 0*64
2010 (Group Pablo)133, 6, 2136
2013 (Group Titus)42, 1, 011
  1. tMales 8–11 years old are not fully mature, but are capable of siring offspring and thus invested in preventing infanticide, which can occur during interactions with outside males. They frequently behave aggressively in species-typical intergroup encounters.
  2. *Female counts are listed as cycling, lactating, pregnant.