Answer:
here
Explanation:
Their environment contains consumable resources, which humans prioritize over the animals. Dolphins.
They ARE consumable resources. Whales.
There exist powerful systems (cultural, economic, government) which propagate consumption or exploitation. Tiger bones. Elephant tusks.
Certain species are obscure, ugly, difficult to care about, or are at inaccessible locations. Certain bats.
As long as humans eat 3 meals a day and have a place to live, basically nobody cares. So agents in power (governments, institutions) are hard to pressure.
The human population is increasing exponentially.