There are a variety of different sizes of dogs; even dogs of the same breed can be classified as different sizes. Giant Breeds typically are breeds that have a standard adult weight over 80 pounds. Large Breeds typically are breeds that have a standard adult weight from 50 to 80 pounds. Medium Breeds typically are breeds that have a standard adult weight from 20 to 50 pounds. Small Breeds typically are breeds that have a standard adult weight under 20 pounds. It is common to see littermates in each of the small-breed classifications. Miniature Breeds are a classification of small breeds that have a standard adult weight from 10 to 20 pounds. Some dogs may be called a “miniature” version of a larger breed and may not fit the 10-20-pound range; instead, they will fall into a weight range that is lower than the standard breed. Toy Breeds are a classification of small breeds that have a standard adult weight from 5 to 15 pounds. Teacup is a classification of small breeds that have an adult weight below the breed standard.