Question

Why Do Animals Become Endangered?

Answer 1

The increasing hunt makes their number diminish. Animals are killed as their fur, horns and tusks are expensive.
Deforestation is the driver of species loss. We destroy animals' environment also animals living in the wood.
Animals become endangered because of pollution, especially marine animals: it makes them ill and kill them.
Finally, global warming (due to pollution) is fatal for some species which can't survive heat.

Answer 2

Because people suck.