Musical Stuffed Animal Cow "Blue Moo" Cow Singing "Blue Moon". This plush animal cow can't stop dancing and singing. He is a charming musical stuffed cow. Blue Moo will croon his way into your heart with his smooth voice & hip threads! Watch him as he sings "Blue Moon" just for you!. Musical stuffed cow "Blue Moo" is sure to make anyone smile. Musical singing cow is a cute musical stuffed cow singing. This cow stuffed animal is adorable and entertaining. Singing cow stuffed animal "Blue Moo" is 12". Musical plush animal cow is popular.