Who takes care of species facing extinction?
Any free individual who cares to donate time or money to the cause.
I'm not going to argue specific points made in the comments below but I inherently feel a sense of stewardship over the natural world hence I am very active in this area.
NOTE: I am not advocating violence in any way. The content of the post is for intellectual, theoretical, and philosophical discussion. FEDS, please don't come to my house.