I brush my cats every day. As it approaches October, my cats seem to be shedding less. But they live entirely indoors, and here in the south, we've been air conditioning pretty regularly. I thought shedding decreased when it got cold, and not when the calendar said that winter was approaching. It some seasonal biological clock at work here? My cats haven't been exposed to any lower temperatures, but somehow they seem to know that they should be holding on to their fur.