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A frog tadpole belly cutaway opens the body to show the spiral gut, gill arches, liver, horny beak and tail. The tightly coiled intestine fills the middle, rows of beaded gill arches flank the throat, the liver sits as a bumpy lobe on one side, and the ringed mouth with its horny beak caps the head; tiny back legs bud where the long tail begins. A rich teaching model for biology lessons on metamorphosis and amphibian anatomy, and a curious specimen for a classroom or display shelf.

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