"Christianity" vs. "The Rest"

From the website of the "Animal Control" division of the City Of Pacific Grove, California:

It is illegal in Pacific Grove to intentionally place or distribute feed, salt blocks or other attractants for deer. People who feed deer do more harm than good, according to the California Department of Fish and Game. One important reason is that deer are the primary prey of mountain lions. Concentrating deer by feeding can attract mountain lions well within the city limits. It may become necessary to kill these lions for public safety.
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Ah, the government at work. If we let the deer starve to death, then mountain lions will starve to death, and we won't have to waste our time killing the mountain lions.

I thought the Bible spoke of man in terms of being caretakers of the animal kingdom, not slaughterers. Remind me again, what is the difference between "Christianity" as practiced in the U.S., and all those other "violent" religions?

TLC