I was watching the last sunrise of 2011 when I noticed Mr. Muskrat sitting out on the front stoop of his lodge in the marsh pond (looking north towards our neighbors) -
(tiny blob in lower left corner of photo below):
He studied the water for a while (his size & pose somewhere between a cat and a squirrel); then jumped in suddenly and paddled down under water; then less than a minute later resumed his position on his lodge. I watched him do it several times over - I'm guessing he was going for breakfast.
(goal in 2012: telephoto zoom lens!)