Is there a difference between a dog and a human?
This does nothing to answer the earlier question asked, to which this was (evidently) addressed. I, therefore, repeat the query (and note that it has not yet, as of this writing, been adequately answered or gainsaid).
As abhorrent as this guy's actions were, it's worth noting that had he killed a human 182 after conception, as he did this dog, his actions would be perfectly legal.