In the movie True Grit (2010), second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decide to kill the horse instead of simply leaving it in the wild?

In the movie True Grit (2010), second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decide to kill the horse instead of simply leaving it in the wild?

In the movie True Grit, second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decide to kill the horse instead of simply leaving it in the wild?

In the movie True Grit (2010), second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decide to kill the horse instead of simply leaving it in the wild?

In the movie True Grit, second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decided to kill the horse instead to simply leave it in the wild?

In the movie True Grit, second to last scene, where Cogburn rides with poisoned Mattie.
In the desperate attempt to save Mattie from the snake venom, Cogburn rides her (of Mattie) horse day-and-night to quickly reach a doctor. As I and everyone can imagine, the horse gets very tired in this race against the time.

Question is: why does Cogburn decide to kill the horse instead of simply leaving it in the wild?