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This is Scientific Americans 60 Second Science.

I'm Karen Hopkins.

If you're a fan of nature shows, you've probably heard of the Bombardier beetle.

When disturbed, this weaponized insect can spray a boiling hot jet of noxious chemicals from its hind end, a response that even the hungriest predators find highly off-putting.

But what if that predator is so stealthy and quick that the beetle doesn't have time to deploy its signature defense before it gets et?

Turns out, the explosion is also effective when detonated from the inside.

We know this because a new study shows that the Bombadier beetles can use their chemical weapons to escape from the belly of the toad that ate them.

They accomplish this Jonah-like feat by using their chemical cocktail to encourage the amphibian to barf them back up.

The findings served up in the journal Biology Letters.

Researchers collected 37 beetles and 37 toads from a forest in central Japan.

Some of the toads, those of the species Bufo-Japonicus, shared their territory with the Bombadier beetles.

Others, the Bufo-Tarenticola, inhabit the nearby streams and don't normally encounter these feisty bugs.

Back in the lab, the researchers paired off their collected specimens and each toad was allowed to capture and swallow a single beetle.

And then came the fireworks.

As the authors note in their paper, an explosion was audible inside each toad,

which means that somewhere along the

elementary canal, the beetles dropped their bombs.

...