Zoe, is normally the sweetest, lickyest, submissive dog, but when she's playing with other dogs and a toy is involved-watch out. She will actually get really aggressive, with her hair rising on her back like a mohawk and snarling at any other dog who gets near "her" toy. It's ugly and scary. The way I've dealt with it is just to take the toy away and/ or move her away from the other dogs for a while. Does anyone else have a dog with this nasty personality trait?