Golden Retriever Length. Long hair grows on top creating a second longer and smoother coat of hair. Asked by Wiki User.

The Golden Retriever is a sturdy muscular dog of medium size famous for the dense lustrous coat of gold that gives the breed its name. Ideally a good walk for a golden can be 30 to 60 minutes in length. The golden retriever does not lose this soft short hair from its puppy days but it becomes the undercoat.
A golden retriever will not grow its long hair until it has surpassed its puppy phase.
Fortunately for us that much walking is not required. The length of this whole cycle is about 4 to 7 months. Golden Retriever tail length. Most golden retrievers deliver after 63 days but its possible to be a little early or a little late depending on the pregnancy condition of the dog.