Healthy Weimaraner Puppy (IMAGE) University of California - Davis Caption This healthy, five-week-old Weimaraner puppy is unaffected by neural tube defects. Credit Noa Safra/UC Davis Usage Restrictions None License Licensed 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.