Zoology is a topic that interests many people. It is a very broad subject so you will have to narrow the theme down quite a bit to create and effective term paper. If you had to choose the theme yourself, I would follow a few steps to get one that you will enjoy and so will your readers.
Just start by brainstorming first. Just write down anything that comes to mind as quickly as possible. Try to get a list of about 10 or so. Once you have done that, start doing research on them and find the ones that have numerous resources. It is very frustrating to pick a topic and then have difficulty finding information. Having enough data can mean getting an A on a term paper or getting a C. Narrow your list down to the top 5 that have lots of research.
Now look at the 5 you have chosen and pick a couple that you know you will enjoy writing about. You will do the best and write the greatest term paper on the topic that interests you. Eliminate a few that may not be as interesting. Now you should have 3 left. From that 3, choose the one that you think your audience will be most interested in. Choose the one that will create the most emotion out of your reader. You want your audience to want to continue reading the paper and then maybe even want to know more after. Here is a list of what I think is the most interesting topics for a zoology term paper:
Above is just a small list of topics for zoology. There are so many interesting animals out there. Pick one and really learn about it. Once you research the animal, a topic will probably jump out at you. Take advantage of this opportunity and really learn something amazing. Then spread your knowledge to your readers and open their eyes to something amazing also. That is what term papers are really for.