Teacup yorkies only grow to be 5–7 inches (12.7–17.8 cm) tall when mature. Additionally, they only weigh 2–4 lbs (0.9–1.8 kg) when fully grown. They typically stop growing after their first year and remain adorably tiny for the rest of their lives.
Due to their small size, teacup yorkies are considered the perfect pet for those who live in apartments and don’t have a lot of space.
Unfortunately, their tiny stature makes them more fragile than traditional yorkies. They’re also more susceptible to birth defects, injuries, and health issues.