Strangely, though, that's not why the team that ended up publishing a recent study in the Journal of Natural History began their project. A paper from the 1980s had mentioned that the Goliath tadpoles eat only one particular plant species, but according to Mark-Oliver Rödel, a herpetologist at the Leibniz Institute for Evolutionary and Biodiversity Research, he and his colleagues thought that was nonsense. The plant in question didn't fully overlap with the frogs' territory, and it would be extremely unusual for tadpoles to only eat one plant. But Goliath frogs are endangered, in part because they're hunted for food and to keep as pets, so it was time to find out for sure just how precarious their food supply might be. "We needed to know more about the biology of the species just to make sure we know what to do," Rödel explains, "in case a captive breeding program might be the last chance for the Goliaths' survival in the future."