Ambassador Rualeth at Aerie Peak wants you to kill 10 Mangy Silvermane and 5 Silvermane Wolves.
The Wildhammer dwarves act as companions, caretakers, and trainers to the gryphons. The gryphons have no shortage of enemies, especially among the forest troll tribes.
Sometimes, though, the threat comes from natural predators, such as wolves. A single animal is no match for a gryphon, but packs have taken to targeting gryphons more often because normal prey is scarce. Culling the wolves can help to reduce their impact on the gryphons and ingratiate us to the Wildhammer.