The opossum has returned a couple of times. Last night it was being shadowed by another cat, and unlike my Whitie who was also out, this cat was at least as large as the 'possum. And unlike my cats this cat did not seem to be at all afraid of the 'possum. In fact it seems to have chased the 'possum away.

One thing I saw last night I have never seen before. The other cat had some red lights at its neck that were flashing on and off (it must have had a collar). It produced a bit of a cognitive dissonance in me, because the cat paid no attention to its lights which were so noticeable to me!