Despite the fact that the Groenendael breed has good health and good immunity, is hardy and strong, there is still a tendency to certain diseases. Some of them are genetic in nature. Namely: dysplasia of the hip joint;dysplasia of the elbow;epilepsy;progressive retinal atrophy (PRA);cancerous tumors;sensitivity to anesthesia – some Belgian Groenendael dogs are very sensitive to anesthesia, therefore, in their treatment, doses are often used the same as in the case of a greyhound (greyhound);hypothyroidism.