You have a good point... if they\'re supposed to be unique ideas, why arn\'t they totally different from one another?
Like you said, the only thing that differentiates between them are tails, ears, horns, wings, and fins. Then again, it is easier to model characters if they all look fairly identical...
Catch 22:
Make them nearly identical and make lots of them later on
OR
Make them all totally different and have fewer of them produced at a time
8*/