Although they may not take up much space, small dogs can have giant personalities and are perfectly sized for cramped living quarters. The pint-sized pooches below are some of the tiniest canines in existence.

Based on data from the American Kennel Club (AKC), here are some of the smallest dog breeds in the world.

Russian Toy Terriers have striking ears and long legs

Russian Toy Terriers are active and intelligent dogs that usually weigh under 6.5 pounds and stand between eight and 11 inches at the shoulder. They were originally bred in Russia to be companion animals to members of the aristocracy and still love to spend time with their human owners.

Yorkshire Terriers have beautiful silky coats

“Yorkies” are known for their glossy long coats and feisty temperaments. According to the AKC, they typically weigh under seven pounds and stand about seven to eight inches at the shoulder.

Yorkshire Terriers are popular pets among apartment dwellers due to their small size. Their coats are actually hypoallergenic and more similar to human hair than animal fur.

Affenpinschers are lesser-known toy dogs

According to the AKC, Affenpinschers are often called “monkey dogs” and are sometimes said to resemble Wookies or Ewoks from “Star Wars.” They usually weigh between seven and 10 pounds and stand around nine to 12 inches at the shoulder. Affenpinschers are known for being extremely outgoing and friendly.

Toy poodles are long-lived and intelligent

Poodles come in a variety of sizes, but toy poodles typically stand no more than 10 inches at the shoulder and they typically weigh between four and six pounds, according to the AKC.

These little dogs can live up to 18 years and are popular show dogs due to their fluffy coats and spirited personalities. Those magnificent coats do require specialty grooming and frequent brushing; many owners opt to have them professionally clipped every four to six weeks.

Maltese have show-stopping coats and charming natures

Maltese are famous for their long coats and elegant looks. According to the AKC, they typically weigh under seven pounds and stand seven to nine inches tall at the shoulder. As you might expect, Maltese coats require daily combing and maintenance to keep them from tangling. However, this breed actually rarely sheds and is generally quite clean.