Some of these pictures and descriptions may give away plot details that you might not want to know before watching the film.
Joshua is an African American soldier who returns from the war and becomes a bounty hunter. He wants to track down the men who killed his mother while he was away at war. In one scene, as he secretly watches a man in a dry wash below him, he hears a rattlesnake behind him. He draws his gun and points it at the snake to shoot it, but changes his mind. He decides to catch the snake and drop it off the cliff onto the man below. The snake lands directly on the man and immediately bites him on the neck. The man dies in about a minute. The snake crawls away into the brush.
Of course, this is absolutely absurd. It would have been smarter, a lot easier, and much safer if Joshua had simply shot the man. But if there's one thing I've learned from movies, it's that a snake always makes a great weapon, and rattlesnakes are always cocked and loaded and ready to bite whoever they're thrown at.
The snake is the common movie rattlesnake - a Western Diamond-backed Rattlesnake.