has so far been confirmed for each behavioral pattern, we here use it as the principle means of summarizing our Table 1 Numbers of behavioral patterns in each category and its phylogenetic position Categories No. of patterns Subtotal Phylogenetic positions 1 12 2 13 23 3 15 25 35 45 5 1 2 3 17 27 37 57 7 18 28 38 78 8 19 2 4 30 127 50 31 44 12 5 58 2 2 9 5 24 5 17 3 34 1 22 13 4 2 5 44 2 39 89 9 Total 2 31 19 891 2 4 157 Likely shared by LCA Likely shared by common ancestors of Pan 125 Likely shared by Pan troglodytes 79 Likely shared by Pan troglodytes schweinfurthii 43