Table 2.

Means and ranges of age, body mass, and percentage of tissue composition for bonobos and humans

Sample	Age, y	Body mass, kg	Muscle, %	Skin, %	Fat, %
P. paniscus	34.0	34.3	37.4	13.0*	3.6†
F (n = 6)
P. paniscus	23.4	42.7	51.6	10.8‡	0.005†
M (n = 7)
H. sapiens§	75.5	57.3	28.6	5.6	36.3
F (n = 20)	22–94	32.0–75.4	16.8–39.0	3.1–9.0	9.4–54.1
H. sapiens¶	56.6	62.4	39.4	6.1	20.3
M (n = 29)	26–87	38.5–88.9	27.3–45.5	4.4–9.5	5.2–30.2

F, female; M, male.

^*Based on five females only.

^†Minimum estimate (Materials and Methods).

^‡Based on five males only.

^§Predominantly older Belgium sample that died of natural causes (32).

^¶Four males of unknown age. Two males were eliminated because they were preadult individuals.