Those who prefer small dogs often choose breeds such as Pomeranians, Maltese and toy poodles, which all typically weigh less than 5 pounds. Many of these breeds are referred to as "toy" versions of a particular breed, according to VetStreet.
The Pomeranian, which is the smallest member of the canine family known as Spitz, is known for its extroversion and for being among the smaller breeds. These dogs tend to weigh 3 to 7 pounds, according to VetStreet. The Maltese weighs between 4 and 7 pounds. This breed is clever and courageous along with being loyal and affectionate. Toy poodles were once trained to perform in circus acts because of their intelligence and agility. The same characteristics make toy poodles popular show dogs in modern times. Standing no higher than 10 inches, this breed weighs between 4 and 8 pounds.
Pets Adviser reports that the Chihuahua is another breed that often weighs less than 5 pounds. In fact, the little dog stands at 8 inches or lower and weighs between 2 and 6 pounds on average. The dog's nickname among many is "purse pooch." Known for being fearless, this breed is often misjudged as docile based on its diminutive size.