Does spike have a death wish!! I had a German Shepard, Most dogs have the seance to avoid/be chilled around them. Mine would either ignore other dogs or have a sniff then walk away. If a another dog got stroppy around him he would bite therir ear Just to so they got the message. Though I had have 2 dickeds with rockwilers who though it would be fun to let there dogs have a go at him, both dogs came off worse for wear.