growth

Question
At what age does a lab stop growing

Answer
They just kind of level off after 6 months and slow growth can continue well into the second year.  Check the ends of the leg bones.  If they are still much knobbier than an adult's, the growth plates are still open and it is still growing.  If not, do not expect much more growth.

You may find this link interesting,   http://jn.nutrition.org/cgi/content/full/134/8/2027S