I've been trying the new Neverwinter MMO. So far it's pretty standard as far as MMO's go, but "The Foundry" feature that allows you to create your own content which is far above anything else out there on the market. There is already a ton of user-created content in the game already, some are very good, others are so-so. But, if you don't like what is created, it makes it pretty easy to create your own.
I'm going back to school to major in Vetrinary Science and Taxidermy. So, either way you'll be getting your dog back!