Apes take a long time to grow up. Marmosets give birth to twins and triplets, and males and older juveniles participate in raising the infants. The fact that food sharing is common in these species indicates that food sharing appears in species for which parenting carries a heavy burden.
■References (Books, papers, Web articles, etc.)
『家族進化論』 第2章・第17節 食物の分配と共食 山極寿一 （東京大学出版会、2012）
「こころの起源―共感から倫理へ」 山極寿一（『＜こころ＞はどこから来て、どこへ行くのか』所収 pp.155～200 河合俊雄・中沢新一・広井良典・下條伸輔・山極寿一 （岩波書店、2016））
Related iCards： Characteristics of primates that share food (Vol 1.)
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