Don’t be fooled by their fluffy exterior; Teacup Poodles are among the smartest dogs around. These miniature masterminds thrive on mental stimulation and love to show off their impressive tricks.

The toy size is most likely to be the parent breed of a teacup because it is already pocket-size at 4 to 6 pounds and less than 10 inches tall. Toy poodles are one of the most popular dog breeds ...