We took Jack to the lake with us on vacation when he was about 6 months (I told this story on another thread-sorry for repeating) and he almost immediately jumped in. Just as immediately, he decided he didn't like it and swam back to shore. A couple of days later, while my husband and I were swimming, we picked him up and took him in with us….you know, talking softly, lots of praise. Jack knew better. As soon as we let him go in the water, he swam right back to shore.
I had a basenji that swam. For 4 years, she avoided water. Then one day, she started swimming. She would toss sticks off the bridge, then race down to the beach and swim way out in the water to fetch them. She loved doing that.
Our test is over.
Well the Jury is in, and our 13 week old Basenji Roo Swims just fine. Today we took him to the lake and I took him in the water with me. We did this 5 or 6 times. I was right there along side him to make sure he was ok. We plan to continue to expose him to the water and swimming. We believe with enough exposure, Roo will come to love the water and possibly be able to come on the sail boat with us.
Lexi will swim- she has so issues with water– especially if you're in it! She'll swim to where you are- and then do circles around you until you pick her up.
Miles… um, he HATES it!
Cinnabuns my senior B will avoid water to the point of absurdity.. while my baby Lycia - if given incentive (.. that being large birds in the water) dives right in, no holds bar.. She however wouldn't even THINK of going outside to pee it's raining… crazy dogs. 
Jack swims just fine, and has been around the water since a very young pup. He hates it though, all the same. In fact, the entire time I am swimming….or even taking a shower.....he watches me like I could drown at any moment.
My little boy was a born lover of water, but not bathing. Unfortunately he sinks like a rock, lol. Boy has to much muscle and tinny feet. Sinks like a stone. You can see him using a life vest on youtube. Just look up Brody the Basenji on youtube. He comes up with his own games and cases leaves floating on the water. If he sees something interesting within elbow depth of the water surface he will stick his face under water to get it and blow bubbles to keep water out of his nose.
Yes, there are B's that swim. There is one that Dock Dives and has done very well, and one of my pups that I replaced close to me, goes to the beach regularily and swims with their ChowX.
Our B has to go swimming very other day
I had one that as soon as she saw water whether a pool or a river she would dive straight in. She did this naturally. Some of mine don't mind water but I don't think they'd swim.
Some years ago I was walking mine in the woods and was passing a pool covered in green algae. Adonis obviously thought at first it was grass! He ran over it for several yards (walking on water) then suddenly realised what it was and sunk!! He then swum back to us. He never showed an inclination to swim after that. I think all animals are able to swim if necessary but not from choice.
My B girl, Bandit, LOVES the river. She's never "swam" but will go in past her belly. I think she is part lab because she will put her WHOLE HEAD underwater to pick up a rock or a stick and come up snorting. She is over 9 and this never ceases to CRACK ME UP!!!! But, I take her to the Cedar River just about every weekend, rain or shine, since she was 9 weeks old. She will run back and forth in the water, chasing whatever I throw for her. My BRAT boy, Hunter, looks on MORTIFIED. God forbid he get his piggy-toes wet!!! Bandit is the biggest Ragamuffin (just like me!!!!).
I've had two that like water. One of them would jump off our dock after water skiers. My others have been quite capable of swimming, but didn't like it much. 
My 2 B's don't swim or go near cold water.
But, when they smell awfully of dead bird after a scent masking action, we take them into the shower and use lots of puppy shampoo to get them clean - they totally relax when they feel the warm water - no problem!
Now see, my baby HATES baths no matter what. He's refused pepperoni to bet him to like baths. PEPPERONI!! But take him to the creek he will be winning and cry that the water is so cold but won't say out of it. Silly boy
JaBok is a sugar foot He doesn't even want to get his feet wet If it is raining it is a war to get him out to do his important business. Than the first thing he does when back in is lick his feet dry. If I take him out in the water he will resist with all his ferocity and when I let him go he swims straight to shore really well. He gets out shakes and the looks at me as if I were crazy for being in the water. When it is hot he will go in the water up to his chest voluntarily though. When it comes to baths it is war again. For the most part I only bath him when he roles in the horses droppings. After a couple of baths for this deed he has stopped rolling in the clods. He actually hasn't had a bath in years and he seems to keep himself really clean. So clean that when asked for a cleaning fee at motels I say no way that he is much cleaner than me and if they insist I find another motel.
Loki can swim, quite well actually. We put him in Puppy Pre K-9 at 11 weeks and he spent his Saturdays at Daycare receiving additional training, including swimming in their dock diving pool. He just won't go in voluntarily, until today! We were at the dog park and there was this female Labradoodle that he absolutely adored. She kept going in the water to retrieve her toys and he wanted to be with her so badly that he actually took to following her in and swam out a good ways quite a few times. I was so surprised, laughing and cheering, got a few strange looks. He was drenched from nose to tail. He's a funny one, food motivated yes, but even more dog motivated!
Giza swam in the Atlantic once when we were out walkin' at low tide and the tile came in.
The Atlantic in Canada is pretty cold!
