for My Pig Amarillo by Satomi Ichikawa
Amarillo is Pablito's best friend. They do everything together-run, hide from each other, jump in the mud. They are inseparable, just like many best friends. But Amarillo is a bit different-he is a little yellow pig.
When Pablito comes home from school one day and Amarillo isn't there, Pablito is devastated. Where could he be? Pablito can't eat; he can't sleep. His heart feels as if it will break wide open. But Grandfather has an idea, a way for Pablito to send a message to Amarillo, and help him say goodbye to his best friend.
My Pig Amarillo is a beautiful story for children of all ages, full of friendship and love and learning to let go.