What new internal conflict does the sound of the dogs baying create for Rainsford?

The new internal conflict Rainsford must come to grips with is the emotion of fear.

At daybreak Rainsford, lying near the swamp, was awakened by a sound that made him know that he had new things to learn about fear. It was a distant sound, faint and wavering, but he knew it. It was the baying of a pack of hounds.

Rainsford knew he could do one of two things. He could stay where he was and wait. That was suicide. He could flee. That was postponing the inevitable. For a moment he stood there, thinking.