Hey everyone ! So I need some help. Aliza my American pitbull terrier is dog aggressive to my dad's dogs when she is crated and when she is outside of the crate. As everyone knows she's my most recent addition, and came from a high kill shelter, I do not know of her past. She has been here for a bit now and she's been pretty good, she's wonderful with people and absolutely loves them. She's high energy and really enjoys cuddling. She doesn't like cats or other dogs and as I live with my dad we have several other dogs. I have dealt with dogs that were aggressive to humans and other animals, but I'd love to have suggestions.on how to overcome this with her. She gets walked daily, she is free of any health problems (she.came from California and was staying with our.friend who is a vet and ensured they were healthy) so that isn't a concern, and she is also spayed. I can tell you her behavior to another dog through a crate and outside. When she is in a crate she growls, and will crouch down, wag her tail loosely and bear her teeth. She doesn't raise her hair at all. Missy which is my dad's other American pitbull (was Delilah) that came from the shelter as well seems to tease her by walking up to the kennel and barking at her. Outside of the kennel we have had her with Missy who is layed back and does get along with our other dogs, Aliza will be sitting with another person and if Missy comes walking up, Aliza will start growling at her and has sometimes lunged. I'm pretty positive it's due to jealousy. Otherwise if Missy doesn't come around her she is generally fine.. she doesn't seem to goto the dogs and try to cause problems, it's only if the dogs come up to her from what I can see.. I'm still watching her behaviour as she is still very new to the family, I wouldn't say at this point it's because of settling in, but an actual behavior problem. I'm hoping that soon the snow will melt, although we just got a snow storm but then I can start taking her for longer walks more once it goes away. Alright, any suggestions or questions ? Feel free to ask.