Which field of science focuses on the study of animals?

Zoology is the branch of science that specifically focuses on the study of animals. It encompasses various aspects of animal life, including their biology, behavior, evolution, classification, and ecology. Zoologists observe how animals interact with their environments, understand their physiological processes, and explore their relationships within ecosystems.

This field of study is integral to understanding the vast diversity of animal life on Earth, ranging from microscopic organisms to large mammals. It can also include studies of animal anatomy, physiology, genetics, and conservation efforts to protect wildlife and their habitats.

The other options represent different fields of study. Anthropology deals with human societies and cultures. Entomology focuses on the study of insects, a specific subset within zoology. Physiology concerns the functions and mechanisms in living systems, which can apply to both animals and plants but does not exclusively focus on animals as zoology does. Thus, zoology is the most accurate answer when considering the broad study of animals.