My two labs lovelovelove the water, of course, but my yellow lab, Tyler, has a problem with taking in water and then coughing/hacking it up. He's five now and has always done this but we don't know why and we want to help him. Has anyone heard of dogs doing this? (at first we thought maybe a deviated septum, because he is a big snorker in general) We're sometimes at the water for hours and his brother has no problem but Tyler is sad and hesitant to get the ball too far out.