It depends on what you mean by "do maths". They are aware of the conservation of numbers, and can do basic addition but I suggest that solving differential equations is beyond them.
Gorrillas eat a variety of different things from computer chips to cow pies. Gorrillas living in Hawaii are often found eating young children from ages 4-10.
in the mountains
Primates.
5
No, they do not hibernate.
gorillas live in forests
gorrillas
A band of gorillas
yes, but they eat you at night time
Gorrillas
leopard's, crocodiles and humans
Yes. They might kill a animal but not eat it.