It is a marsupial (what a fun word) and
It lived during the age of dinosaurs: fossil remains have been found from 70 million years ago.
(learned this from the National Opossum Society website)
Is it mean to set up a trap by the compost pile just to be able to see the critters up close? If so, I can't help it ;)
We stock the trap with lots of yummy fruits, check the trap early in the morning and the critters are released after the photo shoot.