Teacup breeds are ultra‑small dogs selectively bred from toy breeds to be even tinier, often weighing well under 2–3 kg as adults. Because of their delicate bones and fast metabolism, they need very gentle handling, frequent small meals, and close monitoring of their health, especially for issues like low blood sugar and injuries from falls. On BestDog, the Teacup Breeds Blogs explains what “teacup” really means, highlights common health and welfare concerns, and helps you decide if this extreme size is truly right for your home and lifestyle before you choose a puppy.