Research into the diagnosis of human diseases with the cooperation of the dog can be of great help for medication in the initial phases of the pathologies.

The use of the sense of smell is natural for the dog in its daily behaviour, it must be properly trained and focussed during the learning process towards the human pathology to be investigated.

The results that are being obtained demonstrate the suitability of the work and the importance that this research line can continue to acquire in the early diagnosis of cancer, neurological diseases, among others, and certainly in all the pathologies that are treated in our health systems.