Question: how much more will a 1 year old dog grow?
Answer: It's safe to say that small dog breeds (Chihuahuas) have reached their full size by 10 months to 1 year of age. Small-medium dog breeds (Toy Poodles, Beagles, Miniature Schnauzers) will finish growth by about 12-15 months and will have reached their full weight by about 18 months.