His ability to talk to animals would likely give him an edge in solving mysteries. He could ask the owls about any strange comings and goings at Hogwarts. They might have seen something that no one else has. This could lead to him uncovering secrets faster and perhaps even preventing some dark plots before they fully develop.
Well, it could change the plot in many ways. For example, he might get early warnings about danger from animals. If a snake is about to attack someone in the Forbidden Forest, the snake could tell Harry, and he could prevent it. This would make him seem even more of a hero and might change the way his friends and enemies view him.
Chapter 487, "Found a Kindred Spirit?", is the clearest early answer because it turns Shang Shaojing's situation into a concrete plot event.
Chapter 611, "The House She Built is No Ordinary House!", is the clearest early answer because it turns Built's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Li didn't care about the dissenting voices at all; she rolled...
Chapter 157, ""Forced onto Liangshan", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter gives readers a real answer by opening on It was already the last day of Flash Change in his dream.
Chapter 151, "He Yun is quite good, but we are not fated to be together", is the clearest early answer because it turns Chixia Village's situation into a concrete plot event.
Chapter 348, "Seeing You Reminds Me of My Cousin", is the clearest early answer because it turns Luo's situation into a concrete plot event. Early on, Jiang Li's voice wasn't loud, but it carried enough power to.... By the end, Shanshui Pear Garden was a well-regarded Chinese restaurant in the....
Chapter 643, "Jiang Li Dominates the Trending Searches!", is the clearest early answer because it turns Jiang Li's situation into a concrete plot event. The chapter turns that into something concrete by moving from Qi Tianyu joyously carried his construction to the side to wait for...
Chapter 439, "Never Question Sister Li", is the clearest early answer because it turns Sister Li's situation into a concrete plot event. The chapter turns that into something concrete by moving from There was no helping it, she brought the man here, so even if he was...
Chapter 424, "He Must Be Very Strong", is the clearest early answer because it turns Tong Xiaoqi's situation into a concrete plot event. Early on, Shh!" Jiang Yan, who was leading the group, turned around and made a.... By the end, Isn't this just exploiting a loophole?!.
Chapter 406, "Barely Considered Living", is the clearest early answer because it turns Zheng Xun's situation into a concrete plot event.
Chapter 264, "The Truth", is the clearest early answer because the hidden truth stops feeling like mere subtext. A useful checkpoint is the way the scene starts with Jiang Li first reassured her mother, then opened the chat box with...