Bright, colorful illustrations. A stray cat is cared for differently by each person in an apartment building (plays with someone’s yarn, someone else feeds fish). In the end, she has kittens and each person takes one to live with them. One of the illustrations is of the apartment windows/balcony with each of the kittens with their family. Maybe published late 80s/early90s? Not Six Dinner Sid or The Cat with Seven Names.
Stump the Bookseller
New format, same book stumper solving.
This, maybe?
Project Cat by Nellie Burchardt, 1966.
Google Books: “After finding a stray cat, prepared to deliver a litter, young children in a government housing project petition to the city council to allow pets in their apartments. The kids are successful and their new pet gives them a healthy litter.”
LibraryThing: “A multiracial group of little girls find and feed stray cat, but pet animals are forbidden in the public housing ‘project’ where they live. In spite of their gender, race, and poverty — and their youth — the children find the courage to challenge this injustice and take their concerns all the way to City Hall.”