When we put our mulch beds down we noticed a fox digging around the soft ground. It looked smaller so we thought female, then saw a larger male hunting the tree line. It's possible neighbors landscaping (lots of earth moving equipment) disturbed a den, because we had never seen them before. It appeared to be a sandy morph though, not a traditional red color. Our neighbors are claiming they have seen a coyote (which wouldn't really be surprising in Portland) but I'm not so sure they just didn't catch a glimpse of an off color fox.