Perhaps my eyes are fooling me, but it looks as though another wash will take out his belly area also. Did you applique these animals? If so what fabrics are you using? Did you stabilize the applique fabric? It looks like perhaps you used a minkie type fabric for the duck - if you didn't stabilize it, there is a very soft stabilizer designed for stretchy baby fabrics and before you apply the next piece, that might be something to think about. It's such a cute quilt. I would remove the duck and either replace with another duck. You can make another duck on tear away, remove the tear away, and hand applique the duck over where the first duck was. Good luck, well worth the effort and as other have said - you will have a new trick in your bag for future reference when it's all done.