The average Chihuahua stops growing between 6 months and one year after birth. This varies between individual dogs as each has growth spurts at different times. Many owners say that the most common time for a Chihuahua to stop growing is approximately seven to eight months. At this point, rather than grow in size, the dog refines its shape. This means that it may become more muscular, a bit taller and heavier but not significantly so.
Answered by Anonymous - 8/26/2012 4:13:41 PM