I had a friends chow mutt for a year or so, 75ish pounds black as night.
He developed a bad habbit of meandering ascross the street in the dark when i would start my truck in the morning so i started making sure not to let him out with me. My boy let him out when i wasnt looking and some prick doing about 35-40 hit him dead center broad side, barrel rolled him tip to tail of the pickup. Dude never stopped or came back later either.
Dog got up and went piss and hopped in the truck to go to the shop like always. Dropped him at the vet just to get watched for the day. Right as rain, not a scratch on him, never knew anything happened.
He would wonder the couple of blocks at the shop and ward off shit bags and patrol for cats, he loved it. Dumb fucker got hit A SECOND TIME and only got a scratch on his ear. One tough bastard.