Hmm feel I have to comment.
Having a degree may be useful depending on whereabouts you are in the world, and at that, on the place/s you apply for.
Here in the UK most entry level keeper jobs do NOT want a degree. In fact, having spent four years gaining a degree I have personally encountered a good few jobs applied for where my degree has gone AGAINST me, and the post has been given to someone the institution wants to train up and teach 'their' way rather than wherever my university was. (I'm talking about you, Edinburgh Zoo!

) Also, bear in mind that figure of 20K is US money, here in the UK entry level keeper jobs rarely reach that high (I have never seen one at any rate!), although salaries vary depending on which part of the UK and the regional cost of living etc.
What almost every zoo or animal collection keeper position is asking for in the UK is x number of years experience in a zoo environment and/or a qualification in Animal Management. (Check them out now on Zoo News Digest job section!) These qualifications are vocational, so you gain them 'on the job', so you often have to be working or volunteering for a collection already in order to train for them.
My advice would again be the
volunteering - especially if you are in the UK. This would show employers that you are willing to commit (yes to the smelly parts of the job!) to the work, and also hopefully put you in place to train for one of the City & Guilds or NVQ courses in Animal Management or Animal Care.
If you are still at school and at a point where you choose the subjects for your final years then go for the sciences, biology, and also basic computing (believe it or not!) as most jobs require record keeping as much as animal keeping, and more and more this is done via computer. (Going up the ladder, think of the ARKS and ISIS databases, not so friendly to the computer shy!).
One thing that will always go in your favour when going for keeper jobs though is something they probably won't be teaching you in any school or university on the planet =
enthusiasm! Show that you are enthusiastic for the profession, show you know something about animals and that you are passionate for them, that goes much further than having a degree every time - in my experience!
Hope this helps.
