Jealosy can be a big part of it. With our CREW, if they can see us they know we can see them. Lenny likes to chase Boots, Bailey hates Chessie and visversa, Mits hates have anyone else aroound me, but will let Penny have 5-10 minuets before going into his sleep position cuddled in my arm pit. He has held that spot for almost 8 years now.