Is there somewhere you can take him where you can get in the water? I've heard from several people now on BPO that have newfoundlands, that their dog hesitated getting into the water at first. I realize every dog is an individual, so your mileage may vary. For ours, they first had kiddie wading pools in the back yard to play in. They later went to the local pond.. with Bava I got in and lured him in with a treat, threw the bumper and then he got a treat, so forth and so on, and he loved it. With Sophie.. She saw the water, took off running, jumped out and up about 6 feet and swam and swam, she came back in , in 10-15 minutes.... she was soo happy. But Bava was a bit hesitant to begin with until I got in the water first and called him to me with a treat, now he absolutely loves swimming.