As you say that you have completed M.Sc in Zoology. The M.Sc in Zoology is mainly includes the study regarding the structure, evolution, embryology, taxonomy, behavior, and distribution of living and extinct animals.

There is wide range of Career scope after M.Sc in Zoology. Here I am providing you some job profile where you can apply for job. This is as follows:

Career in private sector after M.Sc in Zoology

Biological Laboratory Technician
Conservationist
Environmental Consultant
Herpetologist
Veterinary Technologist
Wildlife Educator
Wildlife Rehabilitator
Zookeeper
Zoologist

Career in government sector after M.Sc in Zoology
Various government departments such as the UPSC, SSC, state PSC, etc conducts examination for recruitment of the candidates.

The candidates can work as:
Zoologist
Zookeeper
Wildlife educator
Environmental consultant
Wildlife rehabilitator
Conservationist in any of the firms