I think I saw a large ferret in my backyard tonight!?

I think you saw a opossum

Ferret united states of america is thru far the terrific cage!! it is huge. And this is a robust metallic(unlike those flimsy metallic cages at petco) I had between the extra value-effective ones and my ferret enjoyed to bit on the cage and attempt to pry it open. once you get one like Ferret united states of america with extra stable metallic, they do no longer chew on it because of the fact it does not experience like they are able to bend it purely like the cheap cages. it is uncomplicated to bathe with the way the doors open and the backside pulls out. it is slightly costly, even though it is well worth it. you will no longer desire to be identifying to purchase a extra suitable one after some months like I did. study the comments on it. anyone loves it!

Does the picture at http://www.google.com/imgres?imgurl=http://www.aaa... look like what you saw?

Or how about the ones here: http://kaweahoaks.com/html/opossum.htm

If so, what you saw was North America's only marsupial, the opossum.

Look up in images: Mink, Weasel, Muskrat.

Try putting food out, in a bowl near your house and see what happens. Then take a pic, if you can.