Given the size and thin/elongated ilia as well as the urban location, I think a domestic cat and/or a raccoon are likely candidates. I'm leaning toward cat.
Ventral view of domestic cat pelvis; Source: BoneID
Anterior view of raccoon pelvis; Source: BoneID
I'm not an expert in differentiating these two ...
In mice, patella would form, but not separate from femur.
On the development of the patella:
Previous studies have suggested a central role for mechanical load in
the initiation of sesamoid development.
Our finding that the patella initially forms as part of the femur and
is later separated by joint formation led us to revisit the issue of
That's the distal end of an antler of some deer. You can tell because the texture is smooth and glossy, all wrong for a rib, and has that flange at the end which looks very different from the uncinate processes you see in some ribs but looks a lot like the flanges you see on some deer antlers. The more rugose, "veiny" texture near the base is also ...