You would get along great with a Labrador or some other active breed. Think about medical conditions. If so, you would probably want to avoid long- haired, double coated breeds such as St. Bernards and Collies that shed a large portion of the year. For the elderly, a small dog such as a Chihuahua can be a blessing. It can also prove to be a hazard.
Many dogs like to run around or through their owner's feet.
These can often cause falls resulting in broken bones. At the same time, a large dog can provide a great feeling of security but a large puppy can cause the same problems as a small dog. Another consideration needs to be care. This does not include such necessities as heartworm prevention, shampoos and food. If so, it would be advisable to avoid such dogs as Chows, Pit Bulls, and other, sometimes aggressive breeds.