克罗斯河大猩猩的典型重量约为 170 千克。原文摘录(英文):These gorillas are smaller in their palates, their cranial vaults, and their skulls than western lowland gorillas. As far as limb and bone length are concerned, there is little difference between the Cross River gorilla and Western lowland gorillas.
Female cross river gorillas weigh on average 100kg (220 lb), whereas male cross river gorillas weigh between 140 and 200 kg (310 and 440 lb) on average.