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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 [142].
| 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 |
