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Can Police Drug Dogs Detect LSD & Acid Tabs?

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Sniffer dogs have been used by police and customs security for many years. Thanks to the powerful canine nose, they’re used to detect illicit substances in a whole host of places including airports, festivals, and during drug raid operations. 

Can police drug dogs detect lsd & acid tabs

Sniffer dogs have a very strong smell, stronger than humans, and thus can detect various drugs in people’s luggage or belongings. They get trained by dog trainers to become part of law enforcement, especially when it comes to narcotics.

They can also be used to help law enforcement to find human remains, firearms, explosives, and even invasive species. But one of their most useful assets is their ability to hunt down and seize illicit substances.

Most sniffer dogs can be trained to pick up the smell of marijuana, cocaine, heroin, methamphetamine, and opiates. 

But how about LSD?

As LSD has no natural scent, it can’t be detected by sniffer dogs. LSD and acid tabs often just consist of small concentrations of liquid dropped onto a tiny piece of absorbent paper.

This in itself makes it difficult for dogs and law enforcement to detect. However, on very rare occasions, it may be possible for a highly trained police dog to hunt down LSD and acid tabs by detecting the odor of chemical impurities present in the drugs.

These impurities are usually a result of the manufacturing process but can sometimes be the result of cross-contamination of banned substances. 

The average police sniffer dog only has the capacity to learn to detect 3-5 different drugs.

Naturally, law enforcement is going to want to target the substances that are considered “problem” drugs in that specific area and therefore train their dogs accordingly.

Police dogs are more likely to be preoccupied with catching those carrying cocaine, heroin, and other narcotics. 

It’s important to remember that police sniffer dogs will only hunt and track down what they have been trained to track down.

For example, a study published in 2019 found that dogs have the ability to accurately sniff out cancer in the blood. So it’s safe to say that if dogs can smell cancer cells, they can certainly smell chemical impurities used in LSD manufacturing.

“Dogs have smell receptors 10,000 times more accurate than humans, making them highly sensitive to odors we can’t perceive. A new study has shown that dogs can use their highly evolved sense of smell to pick out blood samples from people with cancer with almost 97 percent accuracy.” (Source)

Despite this, unless a specific police force is working on a huge operation to bust a huge LSD ring, it’s unlikely that their sniffer dogs will be trained to track down LSD and acid tabs.

You’ve probably seen stories in the news of criminals being caught with LSD by sniffer dogs, but this is usually because the criminal is a prolific drug dealer and has other narcotics in their possession. This would be what the dogs are drawn to, rather than the acid tabs themselves. 

Someone on an online forum discussing the topic had this to say:

I have worked in law enforcement, and am a chemist. Now I concede that it is possible for a dog to smell chemicals that have the potential to be leftover in a batch of LSD, but that being said those chemicals are almost never present in any meaningful quantity.

While this account should be taken with a pinch of salt, as the source is anonymous- it does help to provide insight into how sniffer dogs really track down LSD.

How they’re trained

Usually, police sniffer dogs are trained to detect the most popular narcotic drugs that have flooded the black market. While LSD is referenced a lot in jokes and movies, it’s not actually that common.

In fact, it’s pretty rare. This is most likely due to the fact that LSD isn’t an addictive substance- so naturally, there is less demand for it.

This ultimately means that training police sniffer dogs to track down LSD and acid tablets would be economically inefficient and would be a poor use of resources. This is especially the case in areas where there is a severe heroin or methamphetamine problem. 

These drugs are extremely harmful to users and those around them, far more so than acid.

Police resources are limited, therefore they have to prioritize the more serious drugs in order to keep as many people safe as possible. Training sniffer dogs isn’t an easy task and it’s extremely time-consuming and costly. 

Often, sniffer dogs are beagles. It is not necessarily because they have a better sense of smell than other dogs. This breed is used because it is not very large or intimidating.

In most cases, members of the public won’t object to a friendly beagle coming up for a sniff which makes it easier for handlers to approach people.

The usual police sniffer dog training process begins as follows:

  • The dog gets a favorite toy to play with. This toy then is going to be associated with the smell of the particular chemical impurity; one at a time.
  • A small strong-fiber towel is usually needed to be used as a tug-of-war item. The dog uses it to play tug of war with the trainer. It is then cleaned after the session and re-used.
  • After the dog gets used to playing with the towel, they start putting some small amounts of the trace drug in the towel.
  • The drug is also put in the favorite toy during playtime. This is for them to learn to associate tracing the location of the drug with playing. Once they get used to it after a few days, the trainers make it a game. They ask the dog to find the towel laced with the drug and once they do, they get rewarded with sweet treats.

What makes LSD so difficult to detect?

LSD, or lysergic acid diethylamide, has no scent at all providing it is in its purest form and hasn’t come into contact with any other substances resulting in possible cross contamination.

LSD usually comes in liquid form, and this liquid is clear and completely odorless. This is why most police sniffer dogs will struggle to pick up the scent of LSD. The only time a dog may be able to track down acid tabs is if they have been specifically trained to detect the chemical impurities present. 

So, even if a police sniffer dog isn’t specifically trained to track down LSD, it doesn’t mean that it won’t track it down. For example, an article from an Australian newspaper back in 2016 features the headline “Dogs sniff out LSD, MDMA, and cannabis.”

A casual reader who simply scans this headline may be inclined to believe that the dogs actually followed the scent of the LSD. But upon further inspection, this simply isn’t the case. The article goes on to state:

“During a search of the man, police found a sheet believed to contain 72 tabs of LSD, or acid… at the Pacific Hotel, a 25-year-old Yamba man was found to be in possession of 34 capsules of white powder, believed to be MDMA.”

It’s important to note that these sniffer dogs did not detect the LSD, but rather the array of other substances the suspect had in his possession.

Upon further reading, the article goes on to state that those particular police sniffer dogs had been trained to track down and retrieve MDMA, so it’s more than likely that this is what the dogs were alerted to, not the acid tabs.

When can police use sniffer dogs?

The Fourth Amendment protects a person’s right to be free from unreasonable search and seizure. One of the tools law enforcement most often uses in ways that potentially violate this right is that of the drug detection dog.

Police use sniffer dogs

Drug dogs are a normal practice American police use to conduct searches and sniff out drugs and contraband. Normally, without emergency circumstances, an officer must have probable cause to search a person’s belongings, such as their car or house.

Drug dogs are used by law enforcement to provide that probable cause where none yet exists.

If police violate a person’s Fourth Amendment rights with a drug dog, a motion to suppress whatever evidence they discovered through the violation should be filed.

Drug Dogs and Traffic Stops:

  • Rodriguez v. The United States: Unless police have “reasonable suspicion” of a crime, it is an unconstitutional seizure for them to extend a legal traffic stop in order to conduct a dog sniff. Dog sniffs at a traffic stop are considered “searches” within the Fourth Amendment that require probable cause, and police cannot use a drug dog to obtain that probable cause unless they already have reasonable suspicion. Police authority for holding up your vehicle ends once their tasks tied to the traffic violation (i.e., writing your ticket) are or reasonably should have been finished.
  • Florida v. Harris: The fact that a drug dog is not trained to detect the particular substance found in a vehicle, and alerted anyway, is not enough to dismiss a dog’s reliability or the probable cause their alert provided the police officer. If a drug dog is “certified,” this is enough to create a presumption that the dog provided probable cause, even though there are no uniform standards for drug dog certification and training.

What drugs can police sniffer dogs detect?

  1. Marijuana – The most commonly abused illicit substance. The strong smell is often a huge giveaway, especially to police sniffer dogs.
  2. Heroin – A highly addictive analgesic drug derived from morphine, used to produce feelings of euphoria.
  3. Cocaine – Also known as coke, a strong stimulant most frequently used as a recreational drug. It is commonly snorted, inhaled as smoke, or dissolved and injected into a vein. Mental effects may include loss of contact with reality, an intense feeling of happiness, or agitation.
  4. Crystal meth – A stimulant classified as a controlled substance. It can treat ADHD and can also help obese patients lose weight, but it is often misused.
  5. MDMA – Also known as “Molly” or “Ecstasy,” the official name is 3,4-Methylenedioxymethamphetamine. It is a psychoactive drug primarily used for recreational purposes. The desired effects include altered sensations, increased energy, and pleasure.
  6. Xanax – A type of benzodiazepine, or central nervous system (CNS) depressant. It is legal and often prescribed to treat anxiety and panic disorders. Xanax comes with a high potential for addiction, even when taken as prescribed because tolerance to benzodiazepines occurs quickly.
  7. Adderall – Another legal drug used in the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy. It is also used as an athletic performance enhancer, cognitive enhancer, appetite suppressant, and recreationally as an aphrodisiac and euphoriant.
  8. Opioids – A class of drugs that include the illegal drug heroin, synthetic opioids such as fentanyl, and pain relievers available legally by prescription.
  9. Opiates – Highly addictive substances derived from opium such as morphine and Dilaudid.
  10. Bath salts – This is a group of recreational designer drugs. The name derives from instances in which the drugs were disguised as bath salts.

Can police sniffer dogs smell drugs inside you?

The short answer is probably yes, the smelling power of a dog is extremely impressive and they can often sniff out certain chemicals that are present in your sweat.

But in terms of a sniffer dog detecting a drug that is inside your stomach and submerged in the stomach acid- it’s unlikely. The human body is extremely complex and it’s safe to assume that the human would need to have consumed an insanely large amount of drugs for a dog to sniff it out in their stomach.

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About the author


Kerry White is an avid dog lover and writer, knowing all there is to know about our furry friends. Kerry has been writing for PetDT for three years now, wanting to use her knowledge for good and share everything she can with new dog owners.Kerry has two dogs herself - a German shepherd called Banjo and a chocolate labrador called Buttons. Kerry knows more than anyone how adjusting to new life with a puppy can turn your life upside down, and she wants to ease some of the burdens through her articles.