<human>:  Would WWF be angrier if you killed koala instead of black swan?
<bot>: Yes, WWF would be angrier if you killed a koala instead of a black swan. The WWF is an international organization that works for the preservation of animals. Black swans are designated as least concern species meaning they are not close to being endangered. Koalas are designated as vulnerable to extinction—just a step above endangered, so WWF would be.