R. attenuata's feat is pretty impressive, considering that the frog's digestive system is basically one long tube incorporating the esophagus, stomach (chock-full of digestive juices), small ...

Physical adaptations including a compact, drop-shaped body and the ability to curl down their heads may “help the beetles to survive the way through the frog’s digestive system,” said Martin ...

attenuata move toward the frog vent through the digestive system. P. nigromaculatus always excreted the undigested parts of prey (except live R. attenuata ) > 24 h after swallowing them (Fig.

The frog made easy prey of the unsuspecting beetle. While the amphibians lack teeth that could kill prey with a crunch, a trip through the acidic, oxygen-poor digestive system should be sufficient ...