What is the minimum vigorous daily exercise typically required for an adult Labrador Retriever?

At least an hour.

Despite the affectionate nature that might suggest a lower activity level, the Labrador Retriever is fundamentally a working dog requiring substantial physical exertion. An adult member of this breed typically demands a minimum of sixty minutes of vigorous daily activity, and this requirement can increase depending on the individual dog's energy level or drive. Simple activities like leashed neighborhood walks are often insufficient to satisfy their needs completely. The exercise must be varied and intense enough to engage their retrieving instincts, often meaning activities such as vigorous games of fetch or swimming sessions are necessary components of their daily routine to maintain good physical and mental health.