Here's why:

* Field zoology is a specific area of zoology that focuses on studying animals in their natural environments. This involves observing their behavior, interactions with other species, and the impact of their environment on them.

* Zoologists study all aspects of animals, from their anatomy and physiology to their evolution and behavior. However, field zoologists specialize in studying animals in their natural habitats.

So, while all zoologists might study animals, a field zoologist is the one most likely to be found trekking through forests, exploring coral reefs, or observing wildlife in their natural surroundings.