The faithful dog in Ipeúna, São Paulo, Brazil, saw that his human packmate was injured. He desperately needed canine support, especially as other, possibly hostile humans were converging around him.
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Eventually, he broke free from captivity and rushed to his packmate, placing himself between his friend and numerous enemies. If it came to a fight, he would fight.
You can see the moving full video here. May all humans be worthy of such dogs.
-via Marilyn Terrell
Source: neatorama