Depending on your experience and geographic location, you will be earning between $30K and $70K. If you work for a larger zoo, you will make more money. The same goes for zookeepers with a biology related degree. This is a career that will reward you for the time you put in, so it is important to start early. The more volunteer work you do, the more certifications you earn, and the more hours you log will help you get promotions and better pay.
Being a zookeeper can lead to other jobs as an animal scientist or zoologist, and you can rake in some big bucks if you make a name for yourself - you might end up earning $100K to do what you love.
And who knows, you might become the next Jane Goodall, start an institute, get movies made about you, and speak at universities all over the world!