another thing about opossums is that they are not terribly bright.

you can estimate an animal's intelligence not based on straight brain size, but rather based on its brain size relative to its body size. This can be measured by counting how many dried beans fit into the brain case in a species' skull.

Raccoons, cats, and opossums are roughly the same size. A raccoon brain case can fit 150 beans. A cat's can fit 125. But an opossum's, bless its heart, can only fit 25 beans.