Wild gorillas' weight varies by species, sex, and individual differences:
- Adult male gorillas (silverbacks) typically weigh between 136 to 227 kg (300 to 500 lbs) in the wild, with some exceptional individuals recorded up to 267 kg (589 lbs)
- Adult female gorillas usually weigh less, around 68 to 113 kg (150 to 250 lbs)
By species:
- Western lowland gorillas males average about 169.5 kg (374 lbs) , females about 71.5 kg (158 lbs)
- Mountain gorillas males may weigh up to 220 kg (484 lbs) , females about 97.7 kg (215 lbs)
- Eastern lowland gorillas males can weigh up to 220 kg (484 lbs) , females around 80 kg (176 lbs)
- Cross River gorillas males weigh approximately 180 kg (396 lbs)
In captivity, males can be heavier, sometimes reaching up to 310 kg (683 lbs) due to diet and lifestyle
. In summary, adult male gorillas generally weigh between 300 to 500 pounds (135 to 227 kg) , while females weigh between 150 to 250 pounds (68 to 113 kg) depending on the subspecies and conditions
