What is the primary purpose of a physical examination in animals?

The primary purpose of a physical examination in animals is to diagnose diseases. During a physical examination, veterinarians assess the overall health of the animal, looking for any signs of illness, abnormalities, or conditions that may not be immediately obvious. This comprehensive evaluation can reveal underlying health issues, inform treatment plans, and guide preventive care.

In the context of the other choices, while preventing parasites, determining breed characteristics, and administering vaccinations are important aspects of veterinary care, they are not the main goal of a physical examination. Preventive measures like vaccinations may be part of the examination process, but the physical examination itself focuses on identifying health problems to ensure the animal receives appropriate medical attention.