SOLVED. Children’s Picture book. A mouse is living in the hippo’s house and wearing her cereal, so she puts him out but then she feels bad so she lets him stay. Cover: hippo wearing pink bathrobe. Read 1995-2000 but probably published earlier. [s]

[Chelsea]

cover has a hippo wearing a pink bathrobe - it’s about a mouse that is living in the hippo’s house and wearing her cereal so she puts him out but then she feels bad so she lets him stay

[Kris]

Chelsea, is this a picture book or children's novel?

[arratavy]

Rosie's Mouse by Gina and Mercer Mayer?

[Chelsea]

Yes! Rosie’s Mouse, that’s it!