I have 4 dogs, and all of them but one loves to swim. We live about half a mile from the lake and we take them swimming fairly often.
Tramp, a German Shepherd, has a swimming pool of his own. He loves to get in it and just walk around in the water or splash it up on his tummy.
Ashley, a mixed breed, will swim in the lake, but won't get near the pool.
Sottice, a black toy poodle, goes CRAZY at the lake. He runs along the edge of the water, barking and biting the water, then he bails off in the water and swims to whoever is out there swimming.
Anna, a chihuahua, is the only one that thinks all the others are completely nuts. She is a dainty little lady that submits to taking a bath, but does not willing enter a body of water.