5 months old my chihuahua Tyson is still under 2 pounds. The mother was an overweight teacup. Quiet fat but still under 5pounds and the father (sire) under 3pounds. he is so small I wonder if he will get much bigger I don't think you'll ever be able to get up onto or down off of the sofa by himself. He wants to be so independent. But soo affectionate.