Opossums do not prey on cats or other larger mammals but will attack them if cornered, or if competing for food. ... They may also be infested with fleas, ticks, mites, and lice; and are hosts for cat and dog fleas, and flea-borne typhus.

Are possums aggressive to cats?

Adult opossums and cats seem to have a mutual respect and leave each other alone. In general, opossums are docile, non-aggressive animals and will not attack your pets. They prefer to escape and avoid confrontations, if possible.

Who would win a fight between a cat and a possum?

In short, the answer is a resounding yes, but perhaps not in the way that you would have thought! The possum is around the same size as a cat, with around 50 razor sharp teeth, and some rather serious claws, both of which could theoretically rip shreds out of your cat in a standoff.