Hybrid vigor is a phenomenon in animal breeding referring to the fact that the first cross between two unrelated purebred lines is healthier than either parent line; with each successive generation, vigor is decreased.
Even with the benefit of hybrid vigor, the importance of responsible breeding in creating healthy dogs should not be underestimated. At Hilltop Pups, genetic testing starts with the first mating of a Golden Retriever to a Poodle. Furthermore, future generations are only bred from the healthiest parents so as to produce long, healthy bloodlines. So while F1s have the greatest hybrid vigor, all generations of Hilltop Pups are expertly bred to be of excellent health and temperament.