Small Dog Sizing suggestion by breed:   

 

xxxsmall – under 3   lbs, Chichahua, Maltese, Poodles, Yorkies

xxsmall –Teacup:   Chichahua, Maltese, Papillons, Pomeranians, Poodles,   Yorkies

xsmall –   Affenpinscher, Australian Terrier, Bichon Frise, Chihuahua, Havanese, Japanese   Chin, Miniature Pinscher, Pomeranian, Schipperkee, Silky Terrier, Toy American   Eskimo, Toy Fox Terrier, Toy Manchester Terrier, Toy   Poodle

small – Brussels   Griffon, Carin Terrier, Chinese crested, Fox Terrier, Italian Greyhound, Lhasa   Apso, Lowchen, Miniature Bull Terrier, Miniature Manchester Terrier, Miniature   Poodle, Miniature Schnauzer, Norfolk Terrier, Tibetan Spaniel, West Highland   Terrier.