I am a bit late responding to this one, but here are a few articles you may find useful now you have 2 dogs :-): http://www.doggiedoor.com/twodogs.shtml http://www.flyingdogpress.com/sayhi.html Tracy Bassett Canberra, Australia espinay@dynamite.com.au visit my webpage at http://members.dynamite.com.au/espinay/index.htm