Fallout: New Vegas Easter Egg - Seymour!

1. Enter The Cave Of Abaddon In The Divide. (You can only do this with the Lonesome Road DLC.)
2. Stray off the beaten path.
3. Eventually you should find a small passageway leading to a mini cave with some pre-war furniture, a skeleton clutching a briefcase and lastly a dog "preserved" in ash, the dog is called Seymour, making it an obvious reference to Frys' dog in Futurama.