Gorilla Tool Use?

It may be nothing more than slinging shit, but when you run out of shit:

Wild gorillas have been seen using "weapons" for the first time, giving a new insight into how early man learned to use sticks and stones for fighting and hunting millions of years ago.

Researchers observed gorillas in the Cross River area of Cameroon throwing sticks, clumps of earth and stones at human "invaders".

It is the first time that the largest of the great apes has been seen to use tools in an aggressive way.

[source]