1. Shih Tzu
One of the most popular companion dogs, the Shih Tzu is a breed that was developed specifically for companionship. These toy dogs generally weigh from 10-19 pounds and have long, straight double coats. This breed is fantastic for seniors of all fitness levels as they do not require a great deal of exercise. Further, they are among the most affectionate and loyal dogs. While similar to the Lhasa Apso, this breed is so affectionate that it will be kind and welcoming even to strangers. With its small size, loving nature, and easy maintenance, the Shih Tzu is a fantastic dog for any senior.