These dogs are extremely small and delicate, often resembling toy breeds more than their larger counterparts. How big does a teacup pomsky get when full grown A teacup pomsky is a miniature version of the popular Pomeranian and Siberian Husky mix. While full-grown teacup pomskys may only reach 10 inches in height and weigh 6 pounds, they still boast all the best features of their larger counterparts.