That sounds really cute!
I just went and looked it up at Amazon (here is the link for anyone else that is interested:
Pee Wee's Tale by Johanna Hurwitz ) and I think I'll add it to my daughter's book list (although I'm a bit shocked that the writer chose to have the
guinea pig "released in the park"). Thanks!

There are also 2 more books in the series: Lexi's Tale and Pee Wee and Plush: A Park Pals Adventure.
I got my 1st grader a couple of the "Fluffy" books (
Fluffy's 100th Day at School ) and one of the Animal Ark books (
Guinea Pig in the Garage ) for Christmas and they were a BIG hit.
My preschooler loves the books by Kate Duke (
One Guinea Pig is Not Enough and
Twenty Is Too Many )