This description would fit the possum in New Zealand. Brush-tail possums were introduced to New Zealand in the 1800s, and ever since then, have managed to cause considerable destruction to native New Zealand forests, as there are no natural predators of the possum in that country.
opossum
This description fits the opossum.
There is no animal that has a long o at the beginning.
Orang-utan is a type of rainforest animal that starts with an 'o' at the start of it's name.
orangatang
opossum
opossum
An Opossum is a mammal. It is North America's only marupial (pouched animal).
An animal's pouch is called a marsupium.
Orangutang Opossum
· Opossum · Otter
Old English SheepdogOx