>>1
Congratulations. You have failed metaphor forever.
Additionally, dogs in Biblical times were viewed as unclean and filthy animals and the ancient Hebrew did not consider them suitable as sacrificial animals. Cattle, goats, and sheep were the acceptable animals; barring that, a turtledove or pigeon. The only job either half of the Bible rewards them with is sometimes watching and managing a shepherd's flock, a job which they used for even today.
Lastly, you automatically invalidate your own argument by referencing the patron figure of one religion as a representative for another when that individual is talking to/about a heathen, of all things. And, as said, in metaphor. I don't know how less relevant it could get.