Pets can have a positive impact on a person's mental health in several ways. They provide companionship, reduce feelings of loneliness, offer emotional support, and can help lower stress levels. Pets, especially dogs, encourage physical activity through walks and play, which can boost mood and reduce anxiety. Additionally, caring for a pet can give a person a sense of purpose and routine, which can be beneficial for their mental well-being. Overall, the presence of pets can contribute to improved emotional well-being and reduced feelings of depression.