A dog is supposedly man's best friend, but clearly in  this video you see a dog is a dog's best friend too!  A yellow Labrador was struck on a busy highway and his BFF, a black Labrador sat right by his side.  Talk about a loyal friend!

MSNBC is reporting that the injured dog has not yet been claimed, but I doubt it will take long to find it a home.  Check out the sweet video after the jump.