"I gave Him my wool for His blanket warm;
He wore my coat on Christmas morn."
"I," said the Sheep, with the curly horn
(The Friendly Beasts)
(I recognize that few people "happen" to have a full sheep's fleece to dress their dog up in, but actually, the fleece is what started my whole thought process on Hairy Christmas. Jack, while not terribly amused by the photo process, is rewarded handsomely for his participation. As soon as the offending costume is removed, he is back to his happy little self)