How did they make such a small dog like Pomeranian from big dog's?

Pomeranians were bred from larger Spitz-type dogs, primarily the German Spitz, through selective breeding for smaller size and specific traits. Over generations, breeders focused on size reduction while enhancing desirable characteristics like fluffiness and temperament. The process involved choosing the smallest individuals for breeding, gradually leading to the compact, lively Pomeranian we see today. This selective breeding reflects a common practice in dog breeding to achieve desired physical and behavioral traits.