How do you get a death claw as a pet on Fallout 3?

You can get them as pretty much allies and get them to follow you via console commands, or editing the game using the G.E.C.K on the PC. Any other way I could think of getting one to follow is by getting that frequency thing that one of the scribes give you as something to help you for the Old Olney quest. It will cause the Deathclaw to start following you. Followers would not interfere with this.