I was just browsing around over at Answersin Genesis.org and I found a wonderful article by Dr. Elizabeth Mitchell called Unicorns in the Bible?
In the article, Dr. Mitchell covers the Biblical references and descriptions of unicorns, noting how they were described as actual animals, not fantastical creatures. She then goes on to speculate how the Biblical unicorn might have been an Elasmotherium, an auroch or even an Indian rhinoceros.
I especially like how it ends:
“The Bible is clearly describing a real animal… not the fantasy animal that has been popularized in movies and books. To think of the biblical unicorn as a fantasy animal is to demean God’s Word, which is true in every detail.”
Good cryptozoological research and exposition from a Creationist viewpoint!