The volume is characterized by a practical approach to clinical syndromes thanks to diagnostic and therapeutic algorithms based on the patient's problem (dyspnoea, shock, congestion) and not on the pathology of the single organ. The authors guide the reader through a real training path that starts from the setting of reasoning to address hemodynamic problems and then provides the method to correctly perform and interpret the ultrasound sign by associating it with a normal or pathological condition. Ultrasounds for the evaluation of cardiac function, pleuro-pulmonary and abdominal structures are routine in human medicine but represent an important frontier for a veterinarian who wants to face new professional challenges in the care of their patients. The rich iconography of the volume is completed by 75 videos accessible with QR-Codes, showing the techniques for acquiring ultrasound images and the relative movements of the probe.