The department of Zoology was one of the very first departments with which Science college, Kokrajhar began its journey in the year 1995 with three years General- course. In the year 2005 major course (honours) was introduced. Later in 2017 Post graduate course was introduced and department was upgraded to Post graduate department. Since then, it has been an untiring effort of the department to impart quality education and produce students who are compatible and competent enough to rear themselves a niche in the society. Presently department provides three specializations for post graduate students: Wildlife Ecology; Molecular biology and Immunology; Fish and Fishery biology.
Every year department of Zoology shows excellent result in the final examination. The average pass percentage of under graduate is 97% and Post graduate is 50%.
The department has till now organized one UGC sponsored National Seminar (2012) and completed one UGC major research project.