Remember, Yorkies come in all shapes and sizes (just as we do!). The standard size is , at adulthood, between 4-7 lbs. Tia is approaching her 1st birthday on April 13th and she weighs 2.8 lbs. Although this is not standard, we love our tiny baby. If your baby is healthy (according to your vet) eating well and steadly gaining weight, don't worry. You have been blessed with a healthy pup!