Can I ask what the definition is of "intelligent" life? Ravens use tools - heck, some of them use us! I remember a thing about some crows or ravens (in England, I believe) that were dropping seeds or nuts onto a crosswalk - the crosswalk, mind you, not the middle of the road - and waiting for the light to change. The cars would drive over them and then the birds would wait for the light to change again before they went down to pick through their now-opened lunch.
Sure, the crows of the world may not have a civilization but that's some pretty high-functioning brain power, and I can definitely imagine an alien that evolved from something similar.