Zoologists study the habitats and characteristics of animals and wildlife. 

Their activities may include: collecting information on species specific characteristics, environments, living patterns, and reproductive habits; this information is used to create management and care strategies, increase scientific knowledge and contribute towards conservation, agriculture, and medicine. They use their research for many different purposes. Some just want to improve human knowledge of a particular species. Others help governments develop conservation plans to decrease the negative impacts of human expansion.

Zoologists use many different tools to collect and analyse data. As an example, they sometimes use GPS systems and sophisticated modeling software to forecast and track the migration patterns of particular types of animals. They also collect biological samples and test it to determine the health of animals.

Some of the research that zoologists do is based purely on observation. They might observe how one species reacts to another, how they interact with their habitat, what their reproductive habits are, and how they socialise with other members of their species.

Because there are so many animals out there to study, most zoologists choose to specialise in studying one particular species. Insects, fish, mammals, birds, amphibians, and reptiles are some of the most common specialties, but many zoologists specialise even further and study only one type of animal within a species.

Zoologists are employed in research institutions, zoos, wildlife parks, educational facilities, conservation groups, environmental consulting agencies, and government. Zoologists often work on cross-functional research teams with other scientists. For example, if a zoologist was studying the effects of pollution on fish, she would probably work very closely with a hydrologist and a conservation scientist.