Embryos (and one tadpole) of
the wrinkled frog (Rana rugosa).
Most tadpoles are herbivorous, subsisting on algae. In a few species, some tadpoles turn cannibalistic under harsh conditions and feed on other tadpoles living in the pond.
Tadpole is a 2002 film directed by Gary Winick about a boy who falls in love with an older woman. See: Tadpole (movie).