Originally Posted by Deb

"4. Copyright
deviantART is, unless otherwise stated, the owner of all copyright and data rights in the Service and its contents. You may not reproduce, distribute, publicly display or perform, or prepare derivative works based on any of the Content without the express, written consent of deviantART. However, deviantART does not claim ownership rights in your works or other materials posted by you to deviantART (Your Content)."

link: http://about.deviantart.com/policy/service/