Dogs are great companions. They are always there for you, always ready to play and run or just sit quietly beside you. They love you no matter what and do not judge. After a hard day at school or at work, your dog will be ready waiting to welcome you happily wagging tail and maybe to give a wet, sloppy kiss. Dogs can lift your mood when you're sad and comfort you when you feel alone. Pets are especially good for older people company because they may live alone and feel isolated by themselves, so having a dog is a good choice.