This cocker spaniel takes the plunge (sorry) in Underwater Dogs
—a book chock-full of the cutest, weirdest dog faces never seen by man. Such as what a dog looks like when she's having the best, best, best time ever. Because she doesn't automatically sink in a pool! She can swim! And drink! All at the same time! Even while all the humans are rapidly exiting the water.
by Seth Casteel (Little, Brown and Company).