The Western Lowland gorilla can be found in tropical lowland forests and prefer a more heavily forested and flatter habitat whereas mountain gorillas can be found on the rocky slopes of dormant volcanoes and cloud forests – they are found in generally higher altitudes.
Your lowland gorillas are shorter and have softer fur whereas mountain gorillas have longer and shaggier-looking fur. The lowland gorillas are also smaller than the mountain gorillas and are about a metre shorter when standing. With the males, elderly mountain gorillas maintain their silver fur while elderly male lowland gorillas will often the grey hair on their backs and hips.