POSSUM
OH boy here in little "peaceful" ol NZ, people's eyes go grey at the mention of that word. They are the arch enemy here. We have a possum fur trade here...

They were brought in by the early settlers for their fur. Their population soon exploded however...no predation.
With that population explosion the indigenous trees started to suffer. They feed on the new growth tips and that kills the trees. Beautiful trees hundreds of years old have dissapeared and its a continued fight to try and save what is left. People in neighborhoods even trap them as they are everywhere around here. One stopped me in my tracks (scared the hell out of the dog) one dark night when I first heard its unearthly sound.
Yeah I don't blame the possum (beautiful creature), but I LOVE and treasure trees more.