You can confirm a breeder’s credibility by researching their reputation through reviews and recommendations, verifying their certifications (e.g., AKC registration), and visiting their facility in person. A credible breeder will provide detailed health records for the puppy and its parents, allow you to meet the puppy’s mother, and demonstrate a genuine passion for the breed. Ask questions about health testing, socialization, and the puppy’s upbringing to ensure transparency.