Dogs bark for a variety of reasons. They could bark when they feel threatened. They could growl if they feel protective. Or they could potentially use this canine vocal medium as a way to communicate, which is exactly what this heroic pup did.

If it hadn't have been for this dog's boisterous barks, his thoughtful owner would've never discovered this litter of 10 ill puppies. His loud yelps saved lives that day! This should just go to show you that if your dog is barking, it may be for a really important reason. So, it's always a good idea to go check out what's the matter.