John, I only have Ceilidh who has been troublesome at times, since moving in with my parents and theior spanniel she has calmed down and the spanniel has come out of his shell. I think a lot of it with munsters is attention whether it be positive or negative. With 2 or more dogs there is companionship which seems to benefit them greatly. Maybe just my opinion, but I am sure those with 2 would agree. i know I dont have 2 munsters but it is a similar theory.