I have a 2 YO female that is not currently spayed and has always been friendly with no signs of any aggression even with visitors to the house or other animals in our home. New Years evening with fireworks going off, she attacked our 11 mo Schnauzer. The Schnauzer has been with this dog since 8 weeks and they have always gotten along tremendously. The Schnauzer did come up behind her and it took three adults in the room to get her to release the puppy. Only minimal damage to the puppy. One slight spot of blood on her neck. Keeping them separate currently but need to know if the aggression might continue or if it was just fear based from fireworks.