There is a new book out illustrated by Kady MacDonald Denton (my mother), written by Amy Hest: Billy and Rose: Forever Friends (published by Candlewick). It’s available through all bookstores, in your neighbourhood (my preference) or online, and should appear in your local library soon. If not, ask.
It’s an early reader with four short stories, aimed at children aged six, plus or minus a year or two. This is the first of two books about Billy (a sheep) and Rose (a pig). The second will be out this time next year.
The illustrations are excellent.