He hears cries from the backyard, someone needs immediate help!

When animals need help, it's important to stop and resolve the situation before it's too late. Often, what puts them in difficulty are structures built by man, and therefore it's man's job to deal with any danger. In this case a young deer got stuck trying to climb over a hedge, and this guy had no doubts about his duty to help it. Even if it means breaking the hedge.