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Table 1 Neonatal and adult brain weight and total body weight for the great apes and human beings. Adult body weight is the average of male and female weight. Data from Harvey et al. [25]

From: Bergmann’s rule is a “just-so” story of human body size

  Neonatal mass (grams) Adult mass (grams)
Species Brain Body Br/Bo ratio Brain Body Br/Bo ratio
Pongo (orangutan) 170.3 1,728.0 0.10 413.3 53,000.0 0.008
Pan (chimpanzee) 128.0 1,756.0 0.07 410.3 36,350.0 0.011
Gorilla 227.0 2,110.0 0.11 505.9 126,500.0 0.004
Homo sapiens 384.0 3,300.0 0.12 1,250.0 44,000.0 0.284