In this case, the bat appeared literally to fly into the toad's mouth, Torres wrote on his blog. As Olaya told him, "out of nowhere the bat just flew directly into the mouth of the toad, which almost seemed to be sitting with its mouth wide open." The bat was likely foraging for insects close to the ground, Torres said, and the toad got lucky. Sorta.
Toads have been known to eat bats, although usually only when they happen upon one opportunistically, said Rachel Page, a researcher at the Smithsonian Tropical Research Institute in Panama who wasn't involved in the present finding. However, some toads and frogs will systematically wait outside of caves and catch bats as they emerge from the roost at night, Page wrote to LiveScience in an email. This has been seen in Australia, she said.
However, bats are not always the victims in this animal-eat-animal world - certain species, like fringe-lipped bats (Trachops cirrhosus), have been known to eat toads.
"My guess is that it is much more common the other way around – lots of bats will hunt frogs, going for the rustling sounds the frogs make as they move through the leaf litter, and some bats [like fringe-lipped bats] even go for the calls male frogs make to attract mates," Page said.