Poison frogs lay their eggs on land, but their young are aquatic, so they must be carried to water when they hatch. In these species, parenting is like a delivery service. The tadpoles cling onto their parent's back, and the little frogs travel far and wide in search of the best places to drop their young. It is a demanding job, but how did tadpole transport evolve?

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References:
Ringler E, et al Adopt, ignore, or kill? Male poison frogs adjust parental decisions according to their territorial status. Sci Rep 2017;7:43544.
Furness AI & Capellini I. The evolution of parental care diversity in amphibians. Nat Comms 2019;10:4709.
Juan D. Carvajal-Castro JD, et al. Aposematism facilitates the diversification of parental care strategies in poison frogs. Sci Rep 2021;11:19047.
Pašukonis A, et al. How far do tadpoles travel in the rainforest?: Parent-assisted dispersal in poison frogs. Evol Ecol 2019;33:613–623.

Credit:
Poison Dart Frogs, the Documentary. [ Ссылка ]

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