As far as I've been able to tell where I am, everything out at night that a cat would be able to reasonably encounter is either too big for the cat to kill or something that I would like the cat to kill (rats and mice).
Well, I'm not sure about the weird floating blob thing that my cameras caught one night. It was a white featureless blob just floating in front of the camera jiggling around. I would have dismissed it as some optical effect, maybe some light somewhere shining right at the camera...except it was casting a shadow. It seemed small enough for a cat to take, but I have no idea what defenses it had. Here's the footage of the blob [1].
Also not sure what this thing is or how it would do versus a cat [2].
[1] https://www.amazon.com/photos/shared/DUGe2BbORXOIQyQgmD65wA....
[2] https://www.amazon.com/photos/shared/x0vVRDOYSJK9oaGArGUVfA....