I think my little Jack Russel has made my German Shepherd kinda affraid to play catch. You see, I was throwing the ball & Candie (the GS) was getting it as I said "Gimmie The Ball", over & over. Minnie (the JR) started growling then finally jumped up & went after Candie. Candie isn't afraid of Minnie cuz of size but Minnie showed her teeth too. Now when Minnie is arround Candie won't play fetch. Minnie growls at me too, if I get too close. The whole family is warry of her. (She's an old lady & lays there most all day. She's 11)