The "favorite animal" question is one that gets asked in job interviews, I thought that the things they like about their favorite animal is the things they like about them selfs, I have used this before, strangest answer was Elephant, she said she liked the boldness and the family connection.

I agree with Jaz tho, they dont seem to raise your value. But they are cool if the deal is pretty much done and you want to show some intelligents.

I did just think you could ask the question but not tell her that its a test or that it means anything, then you could psyco-analyse her with out her knowing, see if shes a nut job or not.