Saphira

A flight of arrows, impossible to see in the darkness, brushed past them and clattered against the cliff. Eragon and Murtagh ducked, covering their heads. With a small growl, Saphira jumped over them so that her armored sides shielded them and the horses. A chorus of clinks sounded as a second volley of arrows bounced off her scales.

Horns of a dilemma, Eragon, pg 550