Maverick

Maverick and Goose

Maverick (māv'ər-ĭk, māv'rĭk) noun.

1. An unbranded range animal, especially a calf that has become separated from its mother, traditionally considered the property of the first person who brands it.
2. One that refuses to abide by the dictates of or resists adherence to a group; a dissenter.

Which definition fits best?