If Pets Had Thumbs Day leaves you wondering what would happen if……. One thing that sets humans apart from many other species on the planet is an opposable thumb. It allows us to do many things that other creatures can’t do. Now imagine what it would be like if your pet had thumbs. Do you get a clear image of your pet with thumbs? Are you seeing your pet doing things with their new thumb? If so, your mind is in spirit with today. Note: If you have a pet monkey, you already know what it would be like for your pet to have thumbs. For more information see petmd.com.