You have dedicated your life in the study of animals.  You could have done this in the field, through text books, or both.  Why you want to know so much about creatures is up to you.

Skill Proficiencies: You have learned the Perception skill by focusing yourself, wither it be from the field or other ways of studying.  You've learned the Nature Skill to better understand creatures and their surroundings.

Tool Proficiencies:

In learning about creature's surrounding and where they are from, you've gained the ability to use Cartographer's tools.

 

Languages: In your studies you learned another language to help in your research.

Equipment:

A leather-bound diary, a bottle of ink, an ink pen, a set of traveler’s clothes, an animal call whistle, and a pouch containing 10 gp.

 

Suggested Characteristics

Zoologist tend to be very focused when it comes to animals.  Some tend to lose their social skills after being with animals or locked in their studies for so long.  They also tend to side with nature more than civilization, or at least try to balance them.