Jesus, don't kill, animals are included in the golden rule, sermon of Mount

Jesus was a vegan (i.e. he didn't use, hurt, kill, exploit and steal from animals): http://circleofcompassion.org/articles/articles-will/article-lostreligionjesus.htm
So when he said we should treat others as we ourselves want to be treated ourselves, and to love our neighbour as ourselves, he referred to all animals. So this principle applies to all beings regardless of species:

If we don't want to be killed, we shouldn't kill another being.
If we don't want someone else to steal our family, we shouldn't steal their family.
If we want to find our purpose in this world, we shouldn't steal others purpose.
If we don't want to be exploited and abused, we shouldn't abuse anyone else.
If we don't want to become enslaved, we shouldn't keep anyone else as a slave.
If we don't want to hurt any animals, we must become vegans (i.e. stop eating, wearing and using animal products, and in other ways do actions that are hurting and killing animals).
If we don't want our family to be destroyed, we shouldn't destroy other individual's family (which happens whenever we eat milk, eggs or other animal products).
All animals are conscious and they do value life as much as we do. I highly recommend this lecture: http://vimeo.com/17538152#at=0 and the book World Peace Diet by Will Tuttle (www.worldpeacediet.org )

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We need never look for universal peace on this earth until men stop killing animals for food. The lust for blood has permeated the race thought and the destruction of life will continue to repeat its psychology, the world round, until men willingly observe the law in all phases of life, ‘Thou shalt not kill.’”
~ Charles Fillmore, “The Vegetarian