Dear Student ,

This is completely depends on your interest of subject ..  In the field of zoology, you have to do work as a junior scientific officer , zoologist, assistant professor and in forensic science field you have to work with human body and their parts / wild animals and their parts to to get idea about any clue .with the knowledge of zoology , you can do work well in forensic science . At the point of view of mine, if you want a mysterious job ..and passionate about solving puzzles ,then you can go for forensic science .

Hope this answer helps !