I have a 4 year old wolfhound who is an absolute star in every way except when the telephone rings. If I don't answer it by the second ring he starts to howl and won't stop. It's then pointless to answer the call as I can't hear a thing. I've tried changing the ring tone, telling him off, putting him outside (then he just annoys the neighbours by continuing to howl). Does anyone have any suggestions of other things I could try?