I picked up four rat pups at a show to try with a BP. He didn't show interest.

I have an ASF mom that's alone with 5 of her fuzzy babies so I gave her the rat pups. She took them in and is feeding them. The rat pups (eyes not yet open) are easily 2+ times the size of the fuzzies and they all hang out together in a pile. The fuzzies have their eyes open and are walking around while the rat pups look like baby seals.

I had heard of rats fostering ASF's but not the reverse. Anyone else try this? What happens when the rat pups get as big as the ASF mom?