My dog Flint hates loud noises, when we did flyball he hated barking dogs! and still does. So when he was running we'd make sure he wasn't running next to a yapper. But to be honest once he got into it, the enjoyment of running down the jumps and getting the ball, as he's ball mad!! we soon found he just got on with it, and ignored the other dogs. As for Comps we entered a few, but we didn't really like going. I think agility is good, would love to take one of our others dogs, as he's very agile.