There's a rack near the register at every drugstore in the country where not one item on it is a real product.
It's all miniatures. A mouthwash the size of a shot glass. A stick of deodorant built for a doll, a shampoo that gives you one unhurried wash, and a tube of toothpaste good for maybe nine brushings if you're stingy about it, which you will be, because you paid four dollars for a tube the length of your thumb.
That rack exists because of a rule. In 2006 the TSA rolled out what it calls 3-1-1: liquids in a carry-on have to come in containers of 3.4 ounces or less, which is 100 milliliters, and all of them have to fit in one quart-size clear bag, one bag per person. So an entire product category came into the world overnight whose single distinguishing feature is being small.
Per ounce, those bottles are a robbery. Everyone knows it and everyone buys them anyway at 5:40 in the morning on the way to an airport, having discovered that the conditioner you decanted into a reused container the night before decanted itself all over the inside of the bag, which is a thing that happens to me personally at a rate I am not going to defend here.
(The one exception in the entire category is hotel shampoo, which is free, and which you will take, all of it, every bottle in the bathroom, plus the conditioner you don't use and the little sewing kit you will never open in your life, and then those bottles will live in a drawer at home for six years accumulating friends until the day you move and find fourteen of them and think, well, I can't throw those out, and pack them, and move them across a state line, and put them in a new drawer. Fine. It's fine.)
But the part I actually stand there thinking about is the name.
Nobody calls it shampoo. The label says travel size. Trial size. Mini. Every word on the front of that bottle is a comparison to a different bottle that isn't in the store with it, and the comparison is not flattering, and the stuff inside is identical.
In Chinese, the snake is called 小龍.
Xiǎo lóng. Little dragon.
The animal that got named after the one standing in front of it
In the Chinese zodiac, the Dragon is fifth and the Snake is sixth. So the Snake goes directly behind the most auspicious animal in the set, the imperial one, the one whose years produce birth surges across East Asia because parents plan around it. And the colloquial name for the Snake, recorded in dictionaries and used in ordinary conversation across Beijing, Harbin, Xi'an, Yangzhou, Taiyuan and Hangzhou Mandarin, is little dragon. People born in Snake years say it about themselves. 我屬小龍. My sign is the little dragon.
The reasons given are reasonable and they are also devastating. A dragon has a long body and a snaking neck, so a snake is a dragon at reduced scale. Folk tradition treats the snake as the dragon's earlier or earthly form, the draft version. And there's a euphemism at work, because the dragon is lucky and the snake is one of the 五毒, the five noxious creatures, which is a genuinely rough category to be filed in.
The other traditional nickname is 长虫. Long worm.
So the options are little dragon or long worm, and I understand completely why one of them won.
There's a line from Wang Chong, writing in the Eastern Han, that gets quoted whenever this comes up: 龙或时似蛇，蛇或时似龙. The dragon sometimes resembles the snake, the snake sometimes resembles the dragon. Note who's doing the resembling in the second clause and who gets to be the standard in the first.
(Since somebody always asks: yes, those are the same two characters in 李小龍, which is the screen name Bruce Lee took. It came from a child-acting credit where he was the small one, and he was born in 1940, which is a Metal Dragon year. Same words, completely different job. He got the diminutive of the flattering animal. Nobody ever built a franchise on Little Long Worm.)
What Western culture did with this, which was not subtle
The snake in the West has one role and has had it for a long time.
Eden, obviously. Then everything downstream of Eden, which is most of English. Snake in the grass. Snake oil. Lower than a snake's belly. To be snaked. A whole vocabulary in which the animal exists purely as a way to call a person untrustworthy without saying so directly, which is itself a fairly snakey thing to do if you think about it.
And then that vocabulary gets exported back onto the zodiac, which is where the trouble starts. English-language zodiac writing about the Snake is drowning in the words secretive, calculating, manipulative and cold, and those words are not coming from the Chinese tradition. They're coming from Genesis with a paper lantern taped to it. The traditional associations in Chinese sources run toward wisdom, refinement, self-possession and the ability to know a thing without needing it explained, which are not the same list and are barely adjacent to it.
I'm not going to pretend the Chinese tradition is uniformly warm about snakes either. The 五毒 classification is right there. Five noxious creatures, snake included, alongside the scorpion and the centipede. Traditions contain their own suspicions and it's not my business to launder them.
The difference is that the tradition holds both readings at once, and the Western version only imported the bad one and then acted like it had learned something about people born in 1977.
A Brazilian pharmacologist and a thermos of venom peptides
Now the part that I think is the actual story, and it starts in a laboratory in São Paulo.
In 1948, working at the Biological Institute there, Maurício Rocha e Silva incubated blood plasma globulins with the venom of Bothrops jararaca, a Brazilian pit viper, and watched the resulting mixture drop a dog's blood pressure through the floor. What he'd found was bradykinin. The venom was the tool that revealed it.
His doctoral student was a young physician named Sérgio Henrique Ferreira, and in 1965 Ferreira published a paper in the British Journal of Pharmacology and Chemotherapy describing something else in that same venom. He called it bradykinin-potentiating factor. It was a mixture of short peptides, five to eleven amino acids apiece, and what they did was make bradykinin's blood-pressure-lowering effect last much longer than it should have.
That year Ferreira went to London, to John Vane's pharmacology department at the Royal College of Surgeons, and he brought with him the only freeze-dried sample of that factor in existence. By 1968 Vane's lab had worked out what the peptides were actually doing, which was inhibiting an enzyme called angiotensin-converting enzyme. ACE. The thing that turns a fairly inert molecule in your blood into one of the most powerful vessel-constrictors your body makes.
Ferreira and Vane took this to the research director at E. R. Squibb & Sons and made the pitch: build a small synthetic molecule that does what the venom peptide does, and you have a pill for high blood pressure.
Two Squibb scientists took it on. Miguel Ondetti, a chemist, and David Cushman, a biochemist. The first thing out of the program was teprotide, which worked beautifully and had to be injected, which is a fine outcome for a research compound and a useless one for a person with hypertension who would like to not be in a hospital. So they went back and did structural chemistry on the enzyme's active site, more or less designing the key from a description of the lock, and on the 13th of March 1974, after about eighteen months and something like sixty compounds, they made the one that worked orally.
Captopril. The FDA approved it on the 6th of April, 1981.
Ferreira, Ondetti and Cushman shared a CIBA award for it in 1983, which is a lovely thing and is also the level of fame available to a person who figures out how to keep several million strangers from having a stroke. Nobody has made the movie. There is no statue. If you ask a hundred people on a street corner who Miguel Ondetti was, you will get a hundred blank looks and one guy who thinks he might have gone to school with him.
Everything in that class descends from that work. Lisinopril, the one most likely to be sitting in a cabinet in your house right now, was written 66,676,852 times in the United States in 2024, taken by about 16.9 million people, and it ranked as the fifth most prescribed drug in the country. Add in the rest of the class and you're somewhere around eighty-five million prescriptions a year, in one country, for a family of drugs that exists because somebody in Brazil wanted to know what was in a pit viper.
There's a story that gets told alongside this one, and I want to flag it rather than repeat it as fact. The story is that plantation workers in Brazil were observed collapsing after jararaca bites, and that this field observation is what started the research. You'll find it in a great many popular retellings. I couldn't find it in the scholarly histories, including a 2023 paper in Toxins written specifically about Ferreira's time at the Royal College of Surgeons, and the documented origin is a laboratory bench and a dog, not a banana field.
What is genuinely true is that Bothrops envenoming causes severe hypotension and shock in people, through exactly the pathway in question. So the phenomenon underneath the story is real. The story itself has the shape of something assembled later because a bench and a dog make a worse opening than a fainting man does.
I'd rather hand you the version with the dog in it.
Other things that have come out of a snake
Captopril is the famous one. It isn't the only one.
Eptifibatide, sold as Integrilin, is a small cyclic peptide built on a motif found in barbourin, which comes from the venom of the dusky pygmy rattlesnake, Sistrurus miliarius barbouri, an animal roughly the length of your forearm that lives in the American Southeast and is not remotely interested in you. Eptifibatide stops platelets from clumping. It's used during heart attacks and stenting procedures. FDA approved in May 1998.
Tirofiban, sold as Aggrastat, came out of a Merck chemistry program that modeled its molecule on echistatin, from the saw-scaled viper. Same year, same job, different animal.
Batroxobin, from a Bothrops species, is used directly rather than copied, and is approved in China and Japan for defibrinogenation in acute stroke and vascular occlusion. Hemocoagulase preparations from other Bothrops venoms are used as clotting agents in a number of countries.
And then there's ancrod, from the Malayan pit viper, which got as far as phase 3 trials for stroke and was stopped for futility and is approved nowhere. I'm including the failure on purpose. A list where every item worked is a sales page.
The through line: an animal whose entire cultural job in English is to be the thing that betrays you turns out to be carrying a chemistry set of extraordinary precision, because venom has to be precise. It has a very short window and a very specific target, and evolution spent tens of millions of years tuning molecules to hit exactly one receptor and leave the rest alone, which is the same design brief every pharmacologist alive is working against, and they got there first by an enormous margin.
The five Snakes, and a warning about your own birthday
The sixty-year cycle assigns each Snake year one of the five elements from its heavenly stem.
Water Snake, 1953 and 2013. Wood Snake, 1965 and 2025. Fire Snake, 1977 and 2037. Earth Snake covers 1929 and 1989, Metal Snake covers 1941 and 2001, and the traditional readings for those two run toward steadiness and toward precision respectively, which I'll leave there rather than inflate into paragraphs, because at some point elemental personality writing turns into a horoscope column and I can feel myself approaching the line.
The caveat matters more than the elements do.
Those Gregorian years are shorthand and they will mislead you if you were born in the first six weeks of one. The lunar year 2025 didn't start until the 29th of January. Somebody born on the 15th of January 2025 is a Water Dragon, full stop, no matter what the wall calendar in the kitchen said. Same trap in 1965, which started on the 2nd of February, and in 2001, which started on the 24th of January, and in every other year on the list.
If you've spent your life telling people you're a Snake and you were born in mid-January, go check. It's a five-second lookup and it's better than finding out at a dinner.
One more distinction, because English-language sources smear it constantly. The element attached to the year, the Wood in Wood Snake, comes from the heavenly stem. The branch 巳 itself also carries a fixed element, and that assignment is not the same across countries: Fire in Korea, Earth in China, Water in Japan. Two systems, two answers, both correct in their own frame. A site that gives you one number and no context has flattened something.
Sixth in four countries, and not the same sixth
The Snake holds position six across the whole region and this is one of the few things that stays put.
In Vietnam it's Tỵ. The Vietnamese zodiac makes two substitutions that people usually only half-remember: the Cat replaces the Rabbit at position four, most often explained by the collision between Chinese mǎo and Vietnamese mèo, and the water buffalo stands in for the ox at position two. The Snake is untouched.
In Korea it's 뱀띠, and the Encyclopedia of Korean Culture puts 사 (巳) as the sixth of the earthly branches, same as everywhere else.
In Japan it's 巳, read mi, with 蛇 (hebi) as the animal, and it's the sixth of the twelve eto.
Four traditions, generations of scholarship, regional variation in the folk readings, active practice in all of them today, and diaspora communities on every continent keeping the calendar. This is a living thing, not a decorative one, and the version that shows up on a placemat at a Chinese restaurant in Ohio with twelve cartoon animals and a paragraph about your love life is a souvenir of it rather than the thing itself.
Snake years are treated across these traditions as years for consolidation, care and the exercise of judgment, arriving as they do behind the Dragon's noise. That's the reading, and it's a reasonable one, and I'd note that it's also exactly what you'd expect a culture to say about the year that follows its biggest year, in the same way that January is when everyone decides to be sensible.
The unglamorous position, described honestly
If you're a Snake, you have spent your life one slot behind the animal everyone wants.
The Snake gets the year after the surge, and the nickname, and a compliment routed through somebody else's greatness is a specific kind of compliment. You're the good one, comparatively. The smaller one of the impressive thing.
And the tradition, to its credit, doesn't leave it there. The wisdom associations are real and old and they're not consolation prizes bolted on afterward. But the name is the name, and the name is a diminutive, and I don't think there's much point pretending a diminutive is neutral just because it's affectionate. Most of them aren't. Ask anyone whose family still calls them by the name they had at four.
Meanwhile the actual animal, the one out in the world with no opinions about any of this, has been carrying molecules of such surgical accuracy that a Brazilian pharmacologist, an English lab, and two chemists in New Jersey could take one of them apart and rebuild it into a pill that sixteen million Americans swallowed this morning without a thought about where it came from.
Nobody renamed it after that. It's still the little dragon, and still the long worm in the other half of the vocabulary, and still the thing in Genesis that everybody's grandmother warned them about, and still sixth, and the pills go out by the tens of millions anyway.
It's 3.4 ounces of exactly what's in the big bottle, and the small name on the front has never once changed what comes out.
