DS2 was hoovering. Jasper not keen, but getting better. Anyway, DS1 was giving him a fuss to distract him from barking at the hoovering. DS2 then moved Hoover towards dog and DS1. Jasper snapped at the Hoover, then turned and got a gobful of DS1's shirt. He grazed his hip, but didn't break the skin. DS1 was shocked and tearful. Now, when I hoover Jasper has a tendency to run around 'rescuing' things from the Hoover. He picks up toys, blankets etc and moves them away. I want to believe that that was his intention with DS1. But he's not a tiny puppy any more, he's nearly 1 and I am upset. It goes without saying that in future the Hoover and the dog won't mix. How would you handle this?