I missed that post somehow, SO sorry to hear that about Buffy!! What a shock and it is just so awful to witness, I wish dogs wouldn't ever fight like that...
I had Toffee bit at the park a few days ago by a mastiff/pitbull/gsd mix. That huge pitbull type dog did NOT let go, Toffee was screaming, trying to get away, another Labradoodle, who started the incident was on top of him in a flash... It was one of the scariest three minutes of my life, I think...
I couldn't believe that I was actually that calm handler! I didn't know I had it in me... But I pulled that goshdarn Labradoodle off my boy twice, wrestled the Mastiff's neck trying to choke some air supply off to relieve pressure on Toffee, got a hold of the collar then after this didn't work told the dogs owner to pull her dog's hind legs up while securing her dog's front strategically so her dog couldn't spin around and bite her...
I thought Toff was okay afterward, he didn't show any blood even tho the other dogs mouth was bleeding (she had bit her own tongue and cheek)
It was only a day later I saw that she had punctured Toffee's skin, but I just cleaned it and put polysporin on it, it seems ok. He didn't get any scratches like poor Buffy did.
This was the scariest thing I had ever been through regarding any dog I have ever had. This dog did NOT let go, and they had even met and greeted ok. But, clearly once she decided to bite, when Toffee told the Labradoodle off for being an Idiot, her prey drive kicked in and I believe she really wanted to kill Toffee then and there. She would have caused a lot more damage if her owner and I hadn't held on for dear life, so she couldn't shake Toffee again.
I did talk to the owner afterward, I believe her when she said her dog never did this before... she had only turned two... but I betcha the signs were there before, over stimulated under exercised and hyper... Right after the fight I sat down on the grass, relaxed with both dogs on either side of me, feeding them treats whenever her frigging dog looked at me instead of Toffee and talking to the shocked and upset owner ... I recommended that she has to make a decision that it now becomes about management and not training, if that dog decides to bite she will NOT let go, now she knows... What she does with this is her choice, but she is lucky it was me and Toffee who's never totally innocent when it comes to picking a scrap... a person like me who has a little experience... it was only that night that I cried myself to sleep, riddled in anxiety on what I could have done differently.
Not to take over this thread, just to show it all happens in an INSTANT and I can totally feel how you must have felt. I am glad she is okay!!