Kelly Monroe and I have an ongoing feud about who has the best pet. Kelly contends that her dog, Marley, wins that discussion hands down. While I love my cat Calvin. Which pet is the best looking might be a matter of opinion. However both cats and dogs can be good for your mental health. Dogs can ease loneliness, reduce stress, anxiety and depression, promote social interaction, encourage exercise and playfulness, and provide unconditional love and affection. Dogs provide v