do some species of tadpoles poison others
If the parent does not heed this warning and deposits its tadpole into this already occupied pool of water, the original, larger tadpole will eat the younger tadpole. In some species of poison dart frogs, parental responsibility does not end here. In the species Dendrobates granuliferus and Dendrobates pumilio, the female returns to each tadpole and deposits nutrient rich, protein-filled eggs into their private aquariums as food for the developing tadpoles.