Animal Rights
I think there's a clear distinction between man and animals. Consider our sun, which has burned for several billion years and has enough fuel to go several more billions of years. But near the end, the sun will expand greatly in size and output. The earth's oceans will boil away as temperatures approach 1,000 degrees and lead melts. Even the cockroaches won't survive this one. But man might.
Indeed, only man has the ability to escape Earth's gravity and the pending doom. All the other species will die as their habitat is destroyed. Only if man brings some of them along in his space arks will they continue to exist. Clearly man is very unique, very special, very above the animal kingdom. I would add this is further evidence of the Creator's hand.
Animal species consume other species, sometimes even their own, occasionally us. Whether we are "superior" or not, there is no moral conflict as we consume them.