Yona is a hedgehog who appears in the Watership Down series. He appears in the book and in the television series. Yona's name means "hedgehog" in Lapine.
Yona appears in the story, "The King's Lettuce" as a mythical character. Yona's loyalty often wavers because of his penchant for gossip.
In the animated series, Yona's gender is changed to female, and she is good friends with Pipkin, though she appears as a minor character. On Frith's Eve, she comes to the burrow for shelter from the cold.
In season three, she nearly rolls on top of Hannah when the mouse accidentally hits her with an acorn. Upon asking Hannah why she is in such a bad mood, she tells the mouse about the Hedge Wizard, and shows Hannah the way to Hedge's island.