Opossums are extremely resistant to rabies, but not immune!

Also, opossums are crepuscular, meaning that they come out at dawn and/or dusk. Since opossums are very adaptable, the ones in urban areas have a tendency to be nocturnal.

The fact that this one was out in the afternoon (or did you really mean dusk?) does not bode well. Generally only sick animals forage during their burrowing period.

I'm sure Drake's been vaccinated for rabies, but you might want to keep an eye on him just in case (that li'l 'possum may have had something else, after all).