At what age is a female Labrador fully grown?
The Labrador retriever matures moderately fast, reaching adult height from six to 12 months, but possibly still filling out up to 2 years of age.
What's the best age to breed a female Lab?
Breed your female dog between 2 and 8 years of age.
Then, you should be able to breed your female Labrador safely until it reaches the age of 8. Your dog may experience their first heat at 8 months, but you shouldn't breed them now or even at 1 year, because they aren't fully mature and you can run into problems.
How much more do Labradors grow after 6 months?
A two year old Labrador is still very much of a puppy, and attendent with that, has a puppy's exuberance and energy. Labs don't start “settling” down until sometime between two and four years of age.