Calling someone a “rat” is one of the most common insults for someone who tells on others or gives information to authorities. This slang term appears everywhere from street culture to movies, and it carries serious weight. But why are rats associated with snitching?
Rats are associated with snitching because of their behavior in the early 1900s when cities were overrun with these animals. People noticed that rats would leave sinking ships and abandon buildings that were about to collapse, which made them seem like disloyal creatures that would betray their own kind to save themselves. This idea evolved into criminal slang where “ratting someone out” meant betraying your group by telling authorities their secrets.
The connection between rats and betrayal goes deeper than just a simple comparison.
It ties into how people viewed these animals, how criminal culture developed its own language, and how movies and music spread this slang around the world.
The Origin of Rats as Symbols of Betrayal
The image of rats as untrustworthy goes back centuries. In medieval times, people noticed that rats seemed to know when buildings were going to collapse or when ships were in danger of sinking.
Sailors especially talked about how rats would abandon a ship before it went down.
They’d see rats jumping off the boat and swimming to shore, sometimes days before the ship actually sank. This observation led to the saying “like rats fleeing a sinking ship.”

While this behavior was actually just rats using their survival instincts (they could sense structural problems or smell water entering the hull), people interpreted it as disloyalty.
The rats were saving themselves and abandoning everyone else.
This idea of rats as selfish, disloyal creatures who would abandon their own kind became deeply embedded in Western culture.
It’s not fair to actual rats (who are actually quite social and loyal to their groups), but the reputation stuck.
How Criminal Slang Adopted the Rat Term
The specific use of “rat” to mean “informant” or “snitch” started in American criminal underworld slang in the early 1900s.
Cities like New York, Chicago, and Philadelphia had huge rat problems, and criminals used language from their everyday environment.
Gangsters and criminals valued loyalty above almost everything else. Your crew was supposed to stick together no matter what.
Breaking that code by talking to police was the ultimate betrayal, and they needed a word that conveyed how disgusting and low this behavior was.

They chose “rat” because everyone hated rats. Rats spread disease, destroyed property, and (in people’s minds) abandoned their own kind when things got tough.
Calling someone a rat meant they were as low as these despised animals.
The term “ratting someone out” combined this animal metaphor with the idea of exposing someone.
Just like how rats would come out from hiding and run around in the open, a snitch was exposing hidden information and bringing it into the light where authorities could see it.
The Code of Silence and Why Snitching Was So Hated
To understand why rats (as informants) are viewed so negatively in criminal culture, you need to understand the code of silence that exists in these communities.
In organized crime, street gangs, and even prison culture, there’s an unwritten rule that you never cooperate with law enforcement.
You don’t testify, you don’t give information, and you definitely don’t wear a wire. This code (sometimes called “omertà” in Italian mafia culture or “stop snitching” in street culture) is about survival.

When someone breaks this code, they put everyone else at risk. One person talking to police can bring down an entire operation and send dozens of people to prison.
This is why informants are viewed as the absolute worst – they’re not just breaking a rule, they’re endangering everyone they know.
The rat label carried serious consequences. If you got known as a rat, you could be killed.
Even in prison, known informants are often attacked or have to be kept in protective custody because other inmates will hurt them.
How Movies and TV Made the Term Mainstream
The word “rat” for informant really exploded into mainstream culture through gangster movies and crime shows. These forms of entertainment made criminal slang accessible to regular people who’d never been anywhere near that world.
Movies like “Goodfellas,” “The Departed,” “Donnie Brasco,” and countless others featured characters using the term “rat.” These weren’t just background details – often the entire plot revolved around finding the rat in the organization.
One of the most famous scenes in movie history is in “Reservoir Dogs” when the criminals are trying to figure out who the rat is in their group.
The tension and paranoia around informants became a standard plot device in crime films.
TV shows like “The Sopranos” and “The Wire” also featured extensive storylines about rats and the consequences of snitching. These shows were hugely popular and influenced how millions of people talked about informants and betrayal.
The Difference Between a Rat and Similar Terms
In street and criminal culture, there are actually subtle differences between related terms, even though outsiders often use them interchangeably.
A “rat” specifically refers to someone who informs to save themselves or get a reduced sentence. This person is usually part of the criminal organization and betrays people they worked with. This is considered the most despicable type of informant.

A “snitch” can be slightly different – this might be someone who tells on others even when they’re not personally involved or at risk.
Someone who calls the police on their neighbor for selling drugs might be called a snitch, but not necessarily a rat.
An “informant” is the official legal term and is more neutral. It just means someone who provides information to law enforcement.
This could be a rat, but it could also be a witness or someone who was never part of the criminal activity.
“Canary” is an older term that means basically the same as rat – someone who “sings” to authorities. This term comes from the idea of a songbird in a cage, singing away with information.
The Psychology Behind Why People Become Rats
Despite the intense stigma and real danger, people still become informants all the time. Understanding why helps explain why the rat label carries so much anger.
Fear is the biggest motivator. When someone’s facing serious prison time, the instinct for self-preservation kicks in.
Prosecutors are skilled at creating pressure – they’ll threaten maximum sentences, then offer a deal if you cooperate. Many people crack under this pressure.
Some people become informants because they’re actually undercover from the beginning. These aren’t really “rats” in the traditional sense because they were never truly part of the criminal organization. But they’re still called rats by the people they infiltrate.
Money sometimes plays a role too. The government pays informants, and for someone who’s desperate or greedy, this can be enough motivation. Though this is less common than fear-based cooperation.
Occasionally, someone informs out of genuine remorse or because they want out of the criminal lifestyle. They might think cooperating will help them start over. However, in criminal culture, the motivation doesn’t matter – a rat is a rat.
How Hip-Hop Culture Reinforced the Anti-Rat Message
Hip-hop music and culture took the anti-snitching message and amplified it to mainstream audiences in the 2000s and 2010s. The “Stop Snitching” movement became a whole subculture.
Artists like Cam’ron famously said in a 2007 interview that he wouldn’t cooperate with police even if he knew who killed someone living next to him. This statement sparked massive controversy but also showed how deep the anti-rat culture runs.

Rappers regularly reference rats in their lyrics, usually with extreme hostility. 6ix9ine (Tekashi69) became one of the most famous examples of a “rat” in hip-hop after he cooperated with federal prosecutors and testified against his former gang associates.
The backlash against 6ix9ine was intense. Other artists made diss tracks, fans turned on him, and he became a symbol of everything wrong with breaking the code.
His career survived, but only because he already had a huge following – and even then, he’s constantly called a rat.
The “Stop Snitching” DVD that came out of Baltimore in the mid-2000s became infamous. It featured people explaining why cooperating with police was wrong and threatening potential informants. Critics argued it intimidated witnesses and helped criminals avoid justice.
The Ethical Debate Around Informants and Snitching
The reality of informants is way more complicated than the simple “rats are bad” message from criminal culture. There are legitimate ethical debates on both sides.
From a law enforcement perspective, informants are needed tools. Many serious crimes would never be solved without people coming forward with information. Organized crime and gang activity are especially hard to prosecute without inside testimony.
Witness protection programs exist because society recognizes that some people do the right thing by testifying, even at great personal risk.
These aren’t “rats” in the negative sense – they’re often victims or witnesses who help put dangerous people in prison.
On the other hand, the criminal justice system’s heavy reliance on informants creates problems. People sometimes lie to get deals, leading to wrongful convictions. Informants might exaggerate or make up information to seem more valuable.
There’s also the issue of how prosecutors pressure people to inform. Someone facing decades in prison might say anything to reduce their sentence, whether it’s true or not. This creates unreliable testimony.
When Being Called a Rat Spreads Beyond Crime
The rat label has spread way beyond criminal contexts. Now people use it in regular situations where someone tells on another person.
In schools, kids call each other rats for telling teachers about rule-breaking. This can range from harmless (telling on someone who cut in line) to more serious (reporting bullying or dangerous behavior).

In workplaces, employees who report misconduct to management or HR sometimes get called rats by their coworkers. This is especially true in work environments where there’s an “us versus them” mentality between workers and management.
Even in online communities and social media, you’ll see people accused of being rats when they share private information publicly or report someone to moderators or authorities.
This widespread use shows how powerful the rat metaphor is. It immediately communicates betrayal of group loyalty, even in contexts that have nothing to do with crime.
The Impact on Actual Crime Prevention
The strong anti-rat culture in some communities creates real problems for law enforcement and community safety. When witnesses refuse to cooperate with police, violent crimes go unsolved.
In some neighborhoods, this creates a cycle. Criminals know people won’t talk, so they act more boldly.
Violence increases, but conviction rates stay low because no one will testify. The community becomes more dangerous, but the code of silence holds.
Community leaders and activists debate how to break this cycle. Some argue for better relationships between police and communities so people feel safe coming forward.
Others focus on improving economic conditions so crime becomes less attractive in the first place.
The challenge is that in communities where trust in police is low (often for good historical reasons), asking people to inform feels like asking them to side with a system that’s failed them. It’s not a simple issue of right versus wrong.
How Rats (The Animals) Actually Behave
It’s worth noting that real rats don’t actually behave the way the metaphor suggests. Actual rats are highly social animals that show loyalty to their group.
Rats recognize members of their family and colony. They’ll help other rats in distress, share food with rats they know, and show obvious distress when separated from their group.

Scientists have done studies showing rats will work to free other trapped rats, even when there’s no benefit to themselves.
The “rats fleeing a sinking ship” behavior isn’t about disloyalty – it’s just survival instinct. Rats can sense danger and they react to it. They’re not abandoning anyone; they’re just trying not to drown.
So the rat metaphor for snitching is actually pretty unfair to real rats. If anything, rats are more loyal to their groups than many humans are. But stereotypes and cultural associations don’t care much about scientific accuracy.
The Modern Evolution of the Term
Today, “rat” as a term for informant is still widely used, but its meaning has gotten more complex. In some contexts, it’s lost some of its power, while in others it remains as serious as ever.
Social media has changed how people use the term. Calling someone a rat online is easy and happens constantly, often over minor issues.
This overuse has maybe diluted the term’s impact in casual settings.
However, in actual criminal contexts, being labeled a rat is still extremely dangerous. Prison politics still revolve around this label, and it can literally be a death sentence.
Reality TV and documentaries about crime have exposed more people to informant culture. Shows about prison or gang life regularly explain the rat dynamics, making this criminal slang even more mainstream.
The debate about whistleblowers versus rats is interesting too. Corporate or government whistleblowers are often seen as heroes, while street informants are called rats.
Both are revealing secrets, but society judges them very differently based on who they’re informing on.
Conclusion
Rats are associated with snitching because criminal culture in the early 1900s needed a term that expressed ultimate betrayal and disloyalty.
They chose “rat” based on the belief that these animals abandoned their own kind when danger appeared, especially on sinking ships.
The term spread from criminal underworld slang into mainstream culture through gangster movies, TV shows, and later hip-hop music.
Today, almost everyone knows that calling someone a rat means they’ve betrayed trust by giving information to authorities.
The reality is way more complicated than the simple rat label suggests. Some informants are saving themselves at others’ expense, while others are doing what they think is right by cooperating with justice.
Real rats are actually loyal, social animals, making the metaphor somewhat unfair to them.
But fair or not, the association is now permanent in our language and culture. The word “rat” carries immediate meaning – betrayal, disloyalty, and breaking the code.
Whether you agree with that code or not, understanding where this term came from helps you understand a big part of how people talk about loyalty and betrayal.
Hi, my name is Ezra Mushala, i have been interested animals all my life. I am the main author and editor here at snakeinformer.com.