Saying that animals killing us makes us a natural prey is not true, natural prey(to me) entails that that animal is the major source of food for the other. Is human the main food eaten by polar bears?
An orca will eat a turtle every now and then, if it comes across one. Many don't even see a turtle there entire lives, but they will eat them yet. Turtles are the natural prey of an orca, simply because all flesh is natural prey to an orca. Similarily, any flesh is natural prey to a polar bear. We are flesh, we are prey.
Hence it is legitimate to use animals for food and clothing.
Genesis 1:29
Then God said, "I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food.
It is very clear, that right there it says God gave the first people the plants and the trees for food. Some people try to twist this scripture to mean other things, and try to argue that this does not prove people were eating only the fruits and plants. One popular argument is that it was allowing man to eat vegetables as well as meat, but this is wrong. Humans did not meat eat until after the flood. To prove this we need to turn to the 9th chapter of Genesis.....
Genesis 9:3
Everything that lives and moves will be food for you. Just as I gave you the green plants, I now give you everything.
Now notice God says "just as I gave you the green plants, I now give you everything". This is proof that before this point, people were only eating fruits and vegetables. At any rate, at this point God allowed man to eat meat, which opens up the argument that abstaining from meat is a subconscious form of questioning God's mercy. This is not true at all. In fact, vegetarians who believe in the bible are merely preparing themselves for heaven. When the kingdom of heaven is established, all beings will become herbivores. Some might argue that we will not need to eat in heaven, but the bible teaches that even in heaven, beings must eat. For example, in Genesis 19:1-3, angels from heaven ate a meal made of bread. So in heaven, beings will continue to eat. The prophet Isaiah gave many descriptions of this kingdom, and all his visions point to all beings being vegetarian. If all beings in heaven are going to be herbivores, then it would be safe to say that vegetarians living today are merely more prepared for that time. Isaiah chapter 11 gives a lengthy description of the peaceful kingdom, and the 65th chapter has a particular verse that strongly supports the idea of a kingdom filled with nothing but herbivores....
Isaiah 65:25
"The wolf and the lamb will feed together, and the lion will eat straw like the ox, but dust will be the serpent's food. They will neither hunt nor destroy on all my holy mountain," says the LORD.
Romans 14:21
It is better not to eat meat or drink wine or to do anything else that will cause any man to stumble.
The name Daniel means "God is my judge", showing how confident he was that his actions were righteous in the eyes of God. Well, Daniel also was a vegetarian. In the first chapter of the book of Daniel, Nebuchadnezzar, the king of Babylon has imprisoned Daniel. In verse 8, Daniel refused to defile himself by eating the meat being served to him in the prison. Some have said that this is because the meat was offered to Babylonian gods, but this is incorrect, as vegetables were also offered in the name of these same Gods. Daniel abstained from the meat offered because he was a vegetarian. He knew the benefits of such a diet. Consider the following verses...
Daniel 1:11-16
Daniel then said to the guard whom the chief official had appointed over him: "Please test your servants for ten days: Give us nothing but vegetables to eat and water to drink. Then compare our appearance with that of the young men who eat the royal food, and treat your servants in accordance with what you see." So he agreed to this and tested them for ten days. At the end of the ten days they looked healthier and better nourished than any of the young men who ate the royal food. So the guard took away their meat and the wine they were to drink and gave them vegetables instead.
And God said, "Behold, I have given you every herb bearing seed, which is upon the face of all the earth, and every tree, in which is the fruit of a tree yielding seed; to you it shall be for food. And to every beast of the earth, and to every fowl of the air, and to every thing that creepeth upon the earth, wherein there is a living soul, I have given every green herb for food: and it was so." ~God, Genesis 1:29-30
Whatever you do unto the least of my brothers, you do it unto me. (Matthew 25:40)
To kill an ox is like slaying a man; sacrificing a lamb, like breaking a dog's neck. (Isaiah 66:3-4)
One of the ten commandments specifically says thou shalt not kill. It does not say merely thou shalt not murder, which would imply only humans, but it says "Thou shalt not kill," meaning any living being.
According to the creation account in Genesis 1.21, 24 God created the animals and gave each a nephesh chayah, the Hebrew translated as soul.
"anyone, then, who knows the good they ought to do and doesn't do it, sins"
-Jesus
Sorry to overload with info, but I'm passionate about this.