14. Icelandic Sheepdog.
This dog is a bit different than the other smaller versions of dog breeds listed before. This dog breed, which can reach to about 25 pounds in size, is a highly active dog and makes a great companion for any senior who enjoys camping, hiking, trail walking, or simply just being up and about. In addition to being quite active breeds, the Icelandic sheepdog is a very smart breed, which means they can be trained in no time. Consider this dog breed option if you are looking for a great, active companion who will be there every step you take outside or around the house.