Faith

When the UPS driver turns out to be an alien with a mysterious package that could upend human history, Mac, the family dog, makes it known that she does not approve. Her master defends humanity and is brought before an alien committee to explain his violent deed. The fate of humanity hangs in the balance while he musters the poise he needs to defend himself, his family, and his planet. (This short story originally appeared on the Daily Science Fiction website.)