Transcript (en)

A glass frog. A male and tiny. No bigger than your fingernail. Almost everything that walks past here could eat him. Even a cricket. His best chance is to stay absolutely still and trust that the cricket looks right through him. Danger past, and that's just as well, because he is a father, and he's guarding some very precious eggs. Some are now almost ready to hatch. There are several clutches on the leaf, and those at the top, the most recently laid, are barely a day old. But in the jungle, there's always someone out to get you. This wasp is a specialist hunter of frogs' eggs. It's noticed the wriggling tadpoles at the bottom of the leaf. He mustn't move. The youngest eggs are the most vulnerable and he can guard them all But these tadpoles are not as helpless as they might appear Incredibly, the unhatched tadpoles can sense danger and the oldest and strongest wriggle free and drop into the stream below. The eggs at the top of the leaf, however, are still too young to hatch. And now the wasps know they're there. But the male's back looks very like the youngest cluster of eggs. And that seems to confuse the wasps. Using his own body as a decoy is a huge risk. The wasp's stings could kill him. He's managed to save most of his young.