Greetings all! My family and I just rescued an 2 year old Boxer-Staffie mix. She is medium sized, about 44 lbs and house trained. Yesterday, her second day in our home she growled at our 9 year old twice (we think it was because she got close to her box of toys), then later that evening she growled and snapped at my 15 year old/6 foot son (He wasn't near her toys and it was his first introduction to her). My 20 year old daughter had no issues with her at all. Wondering what I might be able to do to fix this situation.