Wow that dog sounds like he definitely had something very wrong with him!! Ha probably better he was put down. No warning even is scary. I understand some dogs are protective and will bark or growl, intimidating and scary but at least there is a warning, and even trained attack/police dogs, are usually trained to go for the arm or leg, just a takedown to temporarily incapacitate them until the handler gets there, but NOT lethal. This dog sounds like he was in full on hunting, stealth, go for the kill mode, not even protective. He sounds like he was full on stalking and hunting you. Scary!! What did boyfriend do? Knock him out the sky? Pin him down? I imagine he would not have appreciated that very much. Scary. Glad you are okay.
I agree, think there was some sort of mental instability going on there. BF knocked the dog one direction and me the other. I was able to scramble out the garage bay and BF somehow managed to get the dog backed into the service station office (I was too shook up to see how he did that).