I didn't think about what to use, I just used my email name, because it seemed appropriate. I am an Artist (sculpture) and I used to have a Rottweiler for a Service Dog (when i was in a wheelchair. she passed after a long bout with cancer) and thus the joke/pun 'rott-and-artist, like rotten-artist except not.

we were a team! (if you count that one team meber laid at the feet of the other while he worked, and picked up tools if he dropped them! lol)