it felt kinda weird why ppl treated philosophy is something to do with religion...either religion or science , both can be co-existed...Science without religion is lame, religion without science is blind...but now i am not talking about religion dude...

To what extent that killing human is not a sin?? In measurement of thought and consciousness...Sound kinda pride and naive that human claim they are different from animal....So killing chicken is not a sin....Are we certain all animal do not consist of thought??

My theory is that we are just on a physical body which we call human's body with the potential to develop human's mind that actually make us a human being..It call humanity...I guess is the way society being classes with different level...Maybe there is a price in everyone of us...Oldest die for youngest as usual...Arent animal as well had a price for themselves???

LOL that doesn't prove that pig can think. You've made a false assumption/conclusion.

Listen to my humble comment.
Animals can't think. Only humans can think because they are special. Humans are made to rule, to govern and control the universe as they can. And among humans there are rulers.

Proof?
1) If animals, can think, why they don't think to enhance their life like human do?
2) Humans can kill more animals(tigers, birds, crocs..etc) but they don't. Why? Is it because of the "rules" made by human's rulers? Or is it because of the bad consequences seen by humans of their acts? Or is it because they have the emotion not to kill them? The answer is.. depends on the person among the humans itself. Because humans sometimes can think deep, sometimes cannot. Sometimes affected by emotion such as symphathy, greed, love, hatred.

So is human same as animal? Physically inside, yes comparing to some animals. But animals can think? No. Only human can. So we can't compare animals' rules with humans' rules.