I don't get it?
Here's a mammoth from WoW
(Note: the minute difference are apparently based on game progress/weaponry/customisation in the game?)
The model from Google as linked by Jettuh:
And a screenshot from the game WoW:
Taking an existing low-poly model created by some-one else, smooth it with keeping textures intact, is not exactly box -modeling..
The silly thing is, had you presented this as "Hey I downloaded/found this cool model in the repository, I smoothed it and made it printable."
You probably wouldn't have offended so many people.
However, it is still not allowed to use copyrighted material, even when someone else decided to upload it to a public domain repository.
It's your responsibility to R&D if a model is public domain or not.