1. Zoologist: A zoologist studies animals and their behavior, habitat, and interactions with the environment. They often work in animal research, conservation, or education.

2. Marine biologist: A marine biologist studies marine organisms and their environment. They can focus on various aspects, such as oceanography, marine ecosystems, or marine conservation.

3. Wildlife biologist: A wildlife biologist studies wildlife populations, their habitats, and their interactions with humans. They may work on conservation projects, wildlife management, or research.

4. Ethologist: An ethologist studies animal behavior and social interactions. They analyze animal behavior patterns, communication, and the impact of environment on behavior.

5. Veterinary scientist: A veterinary scientist studies animal anatomy, physiology, and diseases. They often work in veterinary medicine, conducting research, diagnosing diseases, and developing treatments.

6. Animal behaviorist: An animal behaviorist specializes in the study of animal behavior and psychology. They often work with behavior modification, training, and behavior therapy for companion animals.

7. Wildlife photographer: A wildlife photographer captures images of animals in their natural habitat. They often work in wildlife conservation, raising awareness about endangered species and their habitats.

8. Animal caretaker: An animal caretaker works in animal shelters, zoos, or research facilities, providing care and enrichment for animals. They may also assist veterinarians in animal healthcare procedures.

9. Conservation biologist: A conservation biologist focuses on the preservation of natural habitats and endangered species. They work on projects to protect ecosystems and implement strategies for preserving biodiversity.

10. Animal geneticist: An animal geneticist studies the genetic makeup of animals, looking at inherited traits and variations in populations. They often work in research, animal breeding, or wildlife conservation.

These are just a few examples of careers involving the study of animals. Each field offers unique opportunities to contribute to our understanding and conservation of the animal kingdom.