Zoology is one of those fields like journalism where the total number of positions for zoologists in all of the US is equal to roughly half the number of zoology majors who are graduated annually by American colleges and universities. Less than 10% of people who graduate with a zoology degree end up with a lifetime career in that field.
I would recommend you pursue something more practical and you can look into spending your weekends as a zoo volunteer.
Not enough, but if you are just interested in the money, go and do something else because you have the wrong drives for a career in zoology. Also, to correct the bull, a degree in zoology does not mean you will work as a zookeeper! Far from it. Most zoologists end up in research or in conservation field work. None of which are well paid.