Hunting Bow

The Hunting Bow is a very good bow for its level and sometimes prized by twinks, although most twinks start lookng for their best Level/Damage/Spec Wep at level 15 and on.

Source
Hunting Bow can be found in various places in Azeroth but most commonly found looted off of Dustwind Harpy's in Durotar. It requires Level 6 to be used.