Dogs' growth varies from one breed to another breed. Predicting their size could be difficult. But, it is majorly divided broadly into five sections. Firstly, extra-small dogs who weigh between one and ten pounds and height up to six to nine inches, second the small breed size dogs who weigh less than eleven lbs to twenty-five lbs weight or shorter than 16 inches, third is the medium size dog breed who have eighteen to twenty-two inches of height, and they weigh around twenty-six to forty pounds. Fourth is the large breed size dogs forty-one to seventy lbs and the height is around twenty-eight inches. The last fifth extra large breed dogs come in the range of fifty-seven and a hundred plus lbs weight and the height is above twenty-eight inches.