Pearl, a Chihuahua from Orlando, has been crowned the world's smallest living dog. Measuring just 3.59 inches tall and weighing 1.22 lb, Pearl surpassed her aunt Milly as the new record holder. Despite her size, Pearl has a calm temperament and enjoys joining her owner on shopping trips. Chihuahuas were originally bred as companion dogs in Mexico, thanks to their small size and portable nature. While Pearl holds the title for the smallest living dog, Sylvia, a dwarf Yorkshire Terrier, holds the overall record. Pearl's achievement showcases the extraordinary world of record-breaking canines.