Spinal Dysraphism (NTD) is a genetic disorder affecting the Weimaraner breed with prevalence of around 1.4% in the US. It is characterised by neural tube defect. Affected puppies are unable to move their back legs in the normal way and are unable to walk or run, they drag themselves by the front limbs. As they grow and get stronger they start moving their legs simultaneously like a bunny hopping. Other neurological symptoms include ataxia ande lack of coordination. Spinal Dysraphism is a non progressive disease and so symptoms will not get worse and it is not a painful disease.