How large is usually a Teacup Cavapoo? Cavapoo puppies sizing is dependent upon the scale with the parents. A King Charles Cavalier bred using a Toy Poodle is generally approximated to generally be 50 % in the mixed moms and dads weighs; give or take a number of lbs. Our Teacup Cavapoos are estimated to array concerning 7 lbs & fifteen lbs entirely