That's an interesting point Jac made about the hybrid vigor. Does the vigor apply to overal health during the life of the dog as well as adding extra years to it? If an F1 benefits the most, does an F1b benefit any more than a purebred from this hybrid vigor, being 75% poodle? What is the average lifespan of purebred labs, goldens, & poodles compared to F1 & F1b crosses?