How many lives do dogs have??

So I know that cats are supposed to have 9 lives, but what about dogs? Because I am pretty dang sure that Rosie our oldest dog is running out of lives and luck.
This 24th of July she got spooked by the fireworks and hopped the fense on the deck.
Sadly, she found her way to a very busy street and got hit hard by a car.
Her whole front leg is completely torn apart. She has no skin left at all, and the bone on the top of her arm is totally exposed, as well as the wrist area.
Here is a picture...as I said before she is very scard of cameras so I had to take this with my phone so it didnt have a flash-



Its one of the sadest things I have seen in a long time. The Vet doesnt know how much nerve damage was done to the leg so he isnt positive she will be able to walk on all four legs again. Luckily, she hasnt had any fluid in her lungs and no sign of internal bleeding but the vet did say she isnt out of the woods yet.
Sean is so sweet about picking her up and taking her outside in the morning and evening to use the ladies room.
The doctor gave us hunter green bandages and I wasnt a fan of that, so they were kind enough to switch it out for yellow and pink...she is a girl.
The hardest part has been changing her bandage every day. Its a method called wet to dry where we have to put wet gauze on her wounds and wrap in up once a day. The next day we have to literally rip it off her. It is so painful for her and she just cries and cries. Its AWEFUL. Its not a pretty site at all.
The cutest part of this whole story is Sean. It was the day before the house had to be finished and there were a million people up at the house frantically trying to finish and Sean rushed home to take Rosie into the vet and he just sat there with us the whole time. I thought it was the sweetest thing ever.