Studying diseases that jump from animals to humans (like Rabies or Avian Flu).

For decades, veterinary medicine focused almost exclusively on the physical health of animals—vaccinations, surgeries, and the eradication of parasites. However, as our understanding of the animal kingdom has evolved, so too has the realization that mental and physical health are inextricably linked. Today, the intersection of represents one of the most dynamic and essential fields in modern animal care. The Evolution of Clinical Ethology

Some common behavioral changes in animals that may indicate underlying health issues include: