Yeah, it says the dog was mortally wounded right in the title of the vid. It got hit multiple times. Shame really but what a cool dog that came to its rescue.
Spain can be rough on the doggies. They're often not well looked after. On the service road above our urbanization there was a mom and her litter of pups, some Sheppard/Collie crosses. The mom would chase cars and the pups would chase mom.
One night my girlfriend almost ran over the lot of them as they dashed across the road in front of her and we remarked that it wouldn't be surprising if they got run over.
Sure enough, the next morning on my way to work one of the pups way lying in the middle of the road, on its back, with it's leg in the air. With big dump trucks whizzing by on both directions we stopped and the little pup looked at us and wagged her tail.
I got out and let mom sniff my hand, she was a bit skittish, but was mellow so I went to check on the pup. He was pretty beat up and had a broken leg but was alive (though she wouldn't be for long is we didn't move her). I got out the trunk liner from the car and put her on it and we used it like a stretcher. She tried to crawl back to the property but I kept a hold of her, covered in blood and piss and whatnot but whatever. Mom was cool through all this, I think she knew we were trying to help.
The girl got on the phone to the vet and we took the pup over. She contacted one of the local societies for dogs and they paid to pin its leg.
A couple weeks later our friends adopted her and called her Linea, for La Linea, the local border town with Gib, or "The Line", like the line on the road I said

I called her radar cause she had to wear a cone on her head.
Unfortunately all this has a sad ending because several months later the dog got into some discarded fish bait on the beach and ate a piece of fishing line and hook that did a ton of damage to its gut before anyone realized, and the poor thing had to be put down
Eventually all her siblings were run over too. One lay dead in the ditch for months.
Moral to the story; look after you animals. Don't let them run free, or off leash so they can get into things that will hurt them. People put out poison bait here (and also poison neighbors dogs for barking and running free), there are poisonous bugs, snakes, and plants, plus there are huge mongoose. Discarded fishing tackle is deadly. People steal dogs for dog fights here, or as bait dogs for fights, not to mention the cars and trucks. Spain is rough on the dogs.
Here's the one we rescued. 86 pounds of dobie/lab cross named Veronica.