The following is an excerpt from Jon Carroll's column in the SF Chronicle.
"From an internet person known only as Tim, the proud new owner of a newfoundland dog, this list of rules and regulations:
1. The dog is not allowed in the house.
2. Ok, the dog is allowed in the house, but only in certain rooms.
3. The dog is allowed in all rooms, but has to stay off the furniture.
4. The dog can get on old furniture only.
5. Fine, the dog is allowed on all furniture but is not allowed to sleep in the bed with the humans.
6. Ok, the dog is allowed on the bed, but by invitation only.
7. The dog can sleep on the bed whenever he wants, but not under the covers.
8. The dog can sleep under the covers by invitation only.
9. The dog can sleep under the covers every night.
10. Humans must ask permission to sleep under the covers with the dog."
Erie taught her self to burrow under the covers on my bed about two weeks after I got her. Here you can see her nose just poking out from under them.