And God said, “Let the earth bring forth living creatures of every kind: cattle and creeping things and wild animals of the earth of every kind.” And it was so God made the wild animals of the earth of every kind, and the cattle of every kind, and everything that creeps upon the ground of every kind. And God saw that it was good.
(Genesis 1:24-25 NRSV)
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"God saw that it was good."
Who are we, therefore, to act as if the earth is created only for human beings?
And of course living in such as way as to make the earth's environment inhospitable to other creatures will in the long run make it unfriendly to us as well.