My Bella Blue is 5 yrs old and has NEVER attacked another dog before until I took in a rescue, Alfred, a male that's about 9 yrs old. She hates him. She'll wake up from a nap see him and attack (he will be asleep no where near her)! Alfred started out as a foster dog, we foster many dogs before they go to their forever home, however he has so many health issues that he has to stay with us and we really love him (he's very sweet and very loving). So I do the Caesar method the fingers with the "cht" sound, and it works if I catch her right before the attack begins. It does not work once she's "red zoned" we have to just get her off him and we put her on her side and make her stay down until she is clam, we usually have to gently hold her down during this time. She still does it but now we can usually sense it before it happens and deal with it from there. It tough and upsetting sometimes but we just have to be on top of her when he is near her. Alfred is pretty good at giving her space and usually walks away from her. I hope this helps and good luck!
