the vet said they couldn't take him since we knew the owners and suggested we either ask the owners to surrender him to us or call the rspca for a welfare check. so, we went and knocked and told them we had the cat and that we were willing to keep him if that's what they wanted, and they seemed happy to get rid of him and actually asked us if we could take the mom, too. (unfortunately, we can't. with the new little guy, we have six cats.) the woman who lives there came and knocked about an hour ago to discuss it with us, just to clear the air and explain the situation from her point of view. apparently the mom cat was a pregnant stray that her kids started feeding, but she's allergic to cats and couldn't keep having her in the house. she was able to give away most of the litter except the little guy we just took, but that's why neither him nor the (pregnant again) mom cat are allowed in the house. she thanked us for taking him in, and i told her that if she can get the pregnant mom in her house again and let me know, i would bring my cat carrier over and take her to the local vet to (hopefully) surrender her as a stray. if nothing else, she at least needs neutering. i think my dad has already warmed up to the little guy since he's really fussy, so it looks like we're keeping him, and fingers crossed i'll be able to help the mom cat get the help/care she needs.