The possum was part of Seth's Disintegration Collaboration project. "Was" is the operative word. He has now disintegrated into thin air. The cage was still neatly in place with the rocks around it, which would mean 4-legged animals didn't carry him off, but he is gone. Vanished. It had to be a 2-legged animal. But the only access to our back yard is through a privacy fence gate between our neighbor's house and ours, or by climbing over an 8-foot high chainlink fence, or by scaling a 40-foot high rocky ledge.
The creepy part for Susan is that someone was in our fenced back yard. When? The creepy part for me is that someone else wanted a dead possum enough to steal him.
As for the original Disintegration artifact, neither rain or sun or hail have done much of anything to it. Its resilience amazes me but then so does the fact that I survived 32 years of corporate groveling.