Handmade Percussion Instruments Wooden Frog wooden frog musical instrument 3 Pieces Set of Black Wooden Frog, Brown Wooden Frog, and Natural Wooden Frog, Frog - Rubbing its spine with the wooden stick up and down motion producing realistic croaking sounds. The smaller the frog is, the high pitch of the sound is produced. Approximately Size: : 4 Inch Black wooden Frog, 3 Inch Brown Wooden Frog, 2.75 Inch Natural Wooden Frog