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  • For most humans, farts are a welcome relief, an embarrassing incident, or an opportunity for a gas-based gag.

  • But for many other creatures, farts are no laughing matter.

  • Deep in the bowels of the animal kingdom, farts can serve as tools of intimidation, acts of self-defense, and even weapons of malodorous murder.

  • The smelliest parts in the animal kingdom aren't lethal, but they might ruin your trip to the beach.

  • Seals and sea lions are well-known for having truly foul farts due to their diet.

  • Fish and shellfish are incredibly high in sulfur.

  • And during digestion, mammalian gut bacteria breaks down sulfur and amino acids containing sulfur to produce hydrogen disulphide, a gas with a smell resembling rotten eggs.

  • Seals and sea lions can't help their funky flatulence, but some animals deploy their farts strategically.

  • Both the Eastern hognose snake and the Sonoran coral snake use a tactic called cloacal popping.

  • This involves sucking air into their cloaca — a hole used for urinating, defecating and reproductionand then shooting it back out with a loud pop.

  • These pops are no more dangerous than a sea lion's stench, but they are effective at scaring off would-be predators.

  • Meanwhile, the flatulence of beaded lacewing larvae are silent and deadly.

  • Their farts contain a class of chemical known as allomone that has evolved specifically to paralyze termites.

  • In fact, this allomone is so powerful, a single fart can immobilize multiple termites for up to three hours, or even kill them outright.

  • Either way, these toxic farts give beaded lacewing larvae to devour prey up to three times their size.

  • For some other animals, however, holding farts in can be deadly.

  • The Bolson pupfish is a small freshwater fish found in northern Mexico.

  • These fish feed on algae and other small organisms in the sediment.

  • But during the hottest days of the summer, this algae produces a lot of gas.

  • If a pupfish doesn't fart this gas out, it becomes buoyantmaking it easy prey for passing birds.

  • And it isn't just predators they have to worry about.

  • Excessive gas buildup can actually burst their digestive systems.

  • Researchers have found groups of several hundred dead pupfish that failed to fart for their lives.

  • Fortunately for humanity, animal farts can't directly harm a humanoutside making us lose our lunch.

  • But in the right circumstances, some animal flatulence can create surprisingly dangerous conditions.

  • In the fall of 2015, a tripped smoke alarm forced a plane to make an emergency landing.

  • Upon further inspection, officials found that there was no firejust the burps and farts of over 2,000 goats being transported in the cargo bay.

  • The change in air pressure had caused them to pass gas en masse.

  • Thankfully, this story of farting goats had relatively low costs.

  • But the most dangerous flatulence in the world may actually come from a similarly unassuming mammal: the humble cow.

  • There are nearly one billion cows in the world, most of them raised specifically for milk and meat.

  • Like goats, cows are ruminants, which means their stomachs have four chambers, allowing them to chew, digest and regurgitate their food multiple times.

  • This process helps them extract extra nutrients from their food, but it also produces a lot of gas.

  • This is particularly troubling because one of the gases cows emit is methane, a major greenhouse gas that contributes heavily to global warming.

  • One kilogram of methane traps dozens of times more heat in the atmosphere than one kilogram of carbon dioxide.

  • And with each cow releasing up to 100 kilograms of methane every year, these animals have become one of the biggest contributors toward climate change.

  • So while other animals may have louder, fouler, or even more toxic farts, cow flatulence may be the most dangerous gas ever to pass.

  • Everybody farts. Yes, even you!

  • So why exactly do we humans pass gas?

  • Get the fact about flatulence with this video.

For most humans, farts are a welcome relief, an embarrassing incident, or an opportunity for a gas-based gag.

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B2 TED-Ed gas fart sulfur methane dangerous

The world’s most dangerous fart - Nick Caruso and Dani Rabaiotti

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    林宜悉 posted on 2021/09/07
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