I
know he's upside down:
http://wildlifeanimalz.blogspot.ca/2013/04/Opossum-Fact-New-Photos.html
We call them cougars. Usually reclusive beasts. Never saw one in the bush up north, though they probably saw me. There is the odd sighting & attack around here.
http://preview.tinyurl.com/ng4zttt
One was found in the garage of our most famous hotel, The Empress:
http://preview.tinyurl.com/qhtepmf
How it got that far south, into a totally urban area, is unknown.
No worries; do the cat (or bear) thing – look big. Stand up, raise your arms, make loud growling sounds.