Animal Kill Laws

Question:

What laws permit killing animals?

 There are justifications that laws of different systems (religious, corporate, etc) permit killing animals with certain conditions.

It is true that animal are killed all over the world for food.

1. What laws permit killing animals? Give reference to official online text (for such laws).

2. How do fictional legal systems lawfully exist to breach the laws of nature (fair killing) by mass killings of animal (genocide)?

3. Are those legal systems null & void with misinterpretations for animal killings?


 
Answer: