Most Popular Dog Breeds (IMAGE) Texas A&M University Caption Twenty-five dog breeds account for 60% of the purebred dogs enrolled in the Dog Aging Project. Credit Aubree Herrold, Texas A&M University School of Veterinary Medicine & Biomedical Sciences Usage Restrictions use with credit License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.