Place fly on block "A". Slam block "B" down on fly. Clean off blocks "A" and "B". Done!
Most of the dogs I've had over the years were bug chasers, but especially the last one--a rottie/shepherd mix. She sometimes managed to catch flies, giant mosquitos, moths, and butterflies, too. She usually spit them out afterwards, as they didn't taste good, but once she ate a giant mosquito that I had swatted, but had only succeeded in wounding. She made a face while eating it, though. She also loved to chase the carpenter bees at one house we lived at. The dog we had before her--a border collie/lab mix once caught a bumble bee, made a "terrible taste" face, and spit it out. I couldn't help laughing. I know it didn't sting him, as he would have yelped if it had. The bumble be was all right too, just damp and rumpled. 