Toot & Puddle by Holly Hobbie (2010)
Toot and Puddle are the best of friends. But when Toot leaves Woodcock Pocket to travel and see the world, Puddle chooses to stay at home. Just when Puddle begins to miss his old friend, he embarks on some of his own adventures-right at home. Finally, after Toot returns from his year-long trip, the two discover that true friendship knows no boundaries.