A video that went viral in Brazil a few years back is making the rounds once again. And it's easy to see why.
In the clip, Princesa is seen lounging near a pond where her friend is swimming. Then, seemingly as if to test the dog's reaction, the man decides to simulate drowning, assuming a face-down position motionless in the water. And, well, if it was a test, Princesa clearly passed it.
Without hesitating, the dear dog proved herself a hero — leaping into the water and pulling the man ashore.