@Headstall Meet the Baiji, aka the Yangtze River Dolphin:
There hasn't been a sighting of this dolphin in 40 years, so it's possibly extinct already... let's make the extinction official!
<nukes the Yangtze River>
@clochette Meet the Eungella Torrent Frog:
This is an endangered frog species found only in a small area west of Mackay, Queensland.
<destroys all of Queensland>
@Mancunian Meet the Eastern Barred Bandicoot:
The Victorian subspecies is critically endangered, so we might as well make it extinct, right?
<nukes Victoria>
And because I'm not a monster, I'll allow the Tasmanian subspecies to live on.