We have a lot of possoms here. A friend and I rescued one a few winters back when we saw him crossing barran, windy field. The rehab people said he had frost bite and was very malnourished.
Since then, even tho people think they look like rats (not to me), I always have a soft spot for them, and every other creature under the sun!
What an adorable little friend you have there, bless you for giving him a safe warm home at night!
Yes, your little guy is missing part of his tail, possibly lost in an accident, all the better that your providing a home for him because it's more difficult to make a bed to sleep in. I'm so glad you know that opossums share space well with kitties, in fact, my ferals often eat right along side their possie friends! Opossums love over-ripe fruits and veggies, and of course, they love cat food! I'm a licensed rehabber specializing in opossums if I may ever assist you with your friend. Thank you for sharing these precious piccies!