Hi,

There are a lot of options of specialization for you. Have a look-

1. Marine biology

2.Biomedical science

3.Animal behavior

These are some career scopes-

1.Veterinary nurse

2. Animal technician

3.Nature reserve warden

4. Zoologist

5.Ecologist

6. Conservationist

7.Science writer

8.Toxicologist

9.Research scientist

10. Animal physiotherapist

You can also Zoology internships.

Hope that helps.