The book is about a child and I think his baby cousin comes to visit. The cousin gets peanut butter all over the snout of the child’s favorite stuffed bear.
The child’s grandparent comes to the rescue and cleans the bear. To do so, the stuffing has to be pulled out and there are adorable pictures of the deflated bear before it gets washed and while it is drying.
The story ends with the grandparent saying they would take the child and the bear out the next time the baby comes to visit. The book is probably from the 1980’s.