How does it happen?

One minute I am walking down the road with two of the sweetest, most wonderfulest dogs in the world and the next minute – actually, approximately six seconds after they spot another dog anywhere on the road – I am holding on to two crazed, barking, snarling, insane creatures who think (totally unaccountably) that despite the fact that together they don’t weigh as much as the dog approaching, they can take him or her on and take him or her down. Thank god most of the big dogs we run into on our walk are A. on leash and B. so busy looking with total disbelief at the scene in front of them that they don’t react. Pray god we don’t run into a moose they think they can take down.