My dog is 5 months old and he has been to the lake... he has walked around in it and even waded a bit, but no full on swimming. It is now officially too cold for me to feel safe about letting my dog into the water because there is no way I am going in after him if something goes wrong. Me and my boyfriend go on a lot of float trips and we would like to bring the new pup next year... however, we would like for him to live through it. How can I get him to be comfortable swimming in bodies of water? The rivers we go on are somewhat shallow and not very strong, but I still worry. We use rafts/canoes and not tubes... so he would always have a place to hang out and it wouldn't be constant swimming all day long for him. Where could I get a doggy life vest or is that a really stupid idea?