A fully grown silverback gorilla typically weighs between 300 to 485 pounds (135 to 220 kilograms), with an average around 400 pounds (180 kg). Some particularly large males can weigh up to 500 pounds (227 kg) or even more in exceptional cases
. Mountain gorillas, a subspecies of silverbacks, generally weigh between 350 to 485 pounds (160 to 220 kg), while Western lowland gorillas tend to be slightly lighter, averaging 300 to 400 pounds (135 to 180 kg)
. The weight can vary depending on factors such as diet, habitat, age, and whether the gorilla is in the wild or captivity (captive gorillas may weigh more due to consistent food supply)
. In summary, the typical weight range for a male silverback gorilla is roughly:
- 300 to 485 pounds (135 to 220 kg)
- Average around 400 pounds (180 kg)
- Exceptional individuals up to about 500 pounds (227 kg) or more
Female gorillas weigh about half as much, typically around 150 to 250 pounds (68 to 113 kg)
