I do have a Zoology Degree.. 2.2 (Hons) from Newcastle University.
Sadly, other than a few graduate schemes, and a few jobs as a lab assistant, I very quickly moved away from that field. As fun as university was, I didn't find the Zoology job really taught me anything, and certainly didn't lead into any obvious jobs!
Those who continued to peruse anything related tended to continue within university, getting research jobs/phd thingyies going.
There is plenty of "awesome" research jobs around the world.. if you don't mind essentially paying to be somewhere beautiful counting whales or something! (The pay is terrible as a researcher if not the usual volunteer scheme)
The best area, that I have seen, is to move into the legal/environmental world. One friend became an Environmental Surveyor. All building work needs to be ticked off by one of them, and its a fairly well paid job.