I have had a variety over the years and currently without a fur-ball around. Works best because I am seldom home to properly care for a pet.

That said, my lady-friend does have up to 5 dogs on most days. Generally it is just an aging Australian Healer and aging Chihuahua. When her daughter drops of the others for dog-sitting, there are 2 active Australian Healers and one very active Rhodesian Ridgeback mix with something.

Talk about a fast and agile dog. He can clear a 4 foot fence.

Overall, my favorite is mini dachshund. Have had 2 and they are great dogs.