Groovy older Pinkwater book, illustrated by the man himself. The front flap claims that this is a how-to book for when you meet a pickle creature. The back flap claims that it is a true story. The book itself is a lot like Hoboken Chicken Emergency- a kid is sent to the store and comes back with a big animal friend.
My daughter loved the illustrations of the pickle creature. She said, "All Daniel Pinkwater books have whatever happening and the adults are okay with everything."