Wonder dog and horse belong to Pattie, the "wild girl" of the title, who rejects a proposal from uncouth mountaineer Lige Blew in favor of romancing handsome photographer Billy Woodruff. Taking umbrage to the girl's decision, Lige frames Pattie's granddad for murder.
| Actor | Role |
|---|---|
 Louise LorrainePattie | Pattie |
 Art AcordBilly Woodruff | Billy Woodruff |
| RRex the DogRex | Rex |
| AAndrew WaldronGrandpapa Toto | Grandpapa Toto |
| BBlack BeautyBlack Beauty | Black Beauty |