Quick answer: Dog training has its own vocabulary, but most terms describe simple ideas. A cue is the word or signal that asks for a behavior. A marker (like a click or the word yes) tells your dog the exact moment they got it right. Positive reinforcement means adding something your dog likes to make a behavior more likely. Threshold is the point where your dog is too worried or excited to learn. Counterconditioning and desensitization change how your dog feels about a trigger. Knowing these words makes training guides, classes and trainer advice much easier to follow.

Why training vocabulary matters

Understanding training terms isn't about sounding clever at the dog park. It helps you follow good advice, spot bad advice and communicate clearly with trainers, vets and everyone else who handles your dog.

When a trainer tells you to lower your criteria or work under threshold, knowing exactly what that means can turn a frustrating session into a successful one. It also helps you choose a trainer. Modern, science-based trainers use words like reinforcement, marker and counterconditioning. If you hear a lot about dominance, corrections and being the alpha, that's useful information too.

Major veterinary behavior organizations, including the American Veterinary Society of Animal Behavior (AVSAB), recommend reward-based training as the most effective and humane approach. Most of the terms below come from that world.

The basics: cues, markers and rewards

These are the building blocks of nearly every training session. Learn these first and the rest of the glossary will make much more sense.

• Behavior. Anything your dog does that you can observe, like sitting, barking, jumping or looking at you.
• Cue. The word, hand signal or situation that tells your dog which behavior to do. Sit is a verbal cue. An open palm can be a hand signal cue. Many trainers prefer cue over command because it feels more like communication than a demand.
• Marker. A sound or word that tells your dog the exact moment they did the right thing. A click, the word yes or a tongue click all work. Example: your dog's bottom touches the floor, you say yes, then give a treat.
• Clicker. A small handheld device that makes a consistent click sound, used as a marker. It's useful because it sounds the same every time and is faster than most words.
• Reward. Something your dog wants, given after a behavior. Treats are the most common, but toys, praise, sniffing and going outside can all be rewards.
• Reinforcer. Anything that makes a behavior more likely to happen again. A reward only counts as a reinforcer if it actually works for your dog.
• High-value treat. A treat your dog finds especially exciting, like small pieces of chicken or cheese. Use these for hard tasks or busy places.
• Release word. A word that tells your dog they're free to move, like okay, free or break. It helps your dog learn that sit means sit until I say otherwise.
• Jackpot. A big burst of rewards, like several treats in a row, for an especially great response.

Want to start using these right away? Our easy dog tricks guide puts cues, markers and rewards into simple step-by-step lessons.

How dogs learn: the science terms

These words come from learning science. They sound technical, but they explain why training works.

• Classical conditioning. Learning by association. Your dog learns that one thing predicts another. The leash coming out predicts a walk, so your dog gets excited when they see it.
• Operant conditioning. Learning by consequences. Behaviors that lead to good things happen more often, and behaviors that lead to nothing or unpleasant things happen less.
• Positive reinforcement. Adding something good to increase a behavior. Your dog sits, you give a treat, and sitting happens more often. This is the core of modern dog training.
• Negative reinforcement. Removing something unpleasant to increase a behavior. Pulling pressure off the leash when your dog steps closer is an example. Trainers using reward-based methods use this carefully, if at all.
• Negative punishment. Removing something good to decrease a behavior. Your dog jumps up, you turn away and stop paying attention, and jumping decreases.
• Positive punishment. Adding something unpleasant to decrease a behavior, like a leash jerk or a shock. AVSAB advises against these methods because they can increase fear, stress and aggression.
• Extinction. When a behavior stops because it no longer gets a reward. If begging at the table never works, it eventually fades.
• Extinction burst. A temporary spike in a behavior right before it fades. Your dog may bark louder and longer for attention before giving up. It's a sign you're close, so stay consistent.
• Premack principle. Using something your dog wants to do as the reward for something you want. Sit politely, then you get to go sniff that tree.

The word positive in training doesn't mean nice. It means adding something, and negative means taking something away. That's why positive punishment isn't a friendly method. Our begging guide is a great real-world example of extinction in action.

How behaviors are taught

There's more than one way to get a behavior in the first place. Trainers often mix these depending on the dog and the skill.

• Luring. Guiding your dog into a position with a treat in your hand. Moving a treat up and back over your dog's nose often leads to a sit. Fade the lure quickly so your dog doesn't only work when they see food.
• Capturing. Waiting for your dog to do a behavior naturally, then marking and rewarding it. Great for lying down, stretching or settling on a mat.
• Shaping. Rewarding small steps toward a final behavior. To teach go to your bed, you might reward looking at the bed, then stepping toward it, then one paw on it, and so on.
• Targeting. Teaching your dog to touch something with a body part, usually their nose to your hand. It's a handy foundation for recall, moving your dog and building confidence.
• Criteria. The standard your dog must meet to earn a reward. Raising criteria means asking for a little more, like a longer sit.
• Lower your criteria. Making the task easier when your dog is struggling. A trainer might say this if your dog keeps breaking a stay.
• Fading. Gradually removing a lure, prompt or reward so the behavior happens without it.
• Fluency. When your dog knows a behavior so well they do it quickly and reliably, almost anywhere.
• Proofing. Practicing a behavior in new places and situations so it holds up in real life.

Most dogs learn fastest with a mix of luring for early steps and capturing or shaping for polish. Our 30-day training plan uses all three.

The three Ds and generalization

If your dog sits perfectly in the kitchen but ignores you at the park, these terms explain why.

• Duration. How long your dog holds a behavior, like a 30-second stay.
• Distance. How far away you can be while your dog holds the behavior.
• Distraction. What's going on around your dog while they work, like other dogs, squirrels or kids.
• Three Ds. Trainers increase duration, distance and distraction one at a time, not all at once. Adding a longer stay and a squirrel on the same day is a recipe for frustration.
• Generalization. Your dog's ability to understand that a cue means the same thing in different places, with different people and in different positions. Dogs don't generalize well on their own, so practice everywhere.

This is why practicing in new places is so important. A sit at home and a sit at a busy café are two very different skills for your dog. When things fall apart in a new place, that's not stubbornness. It's a sign to make it easier and build back up.

Fear, stress and reactivity terms

These are some of the most important words in the glossary, especially if your dog barks, lunges or hides. They describe how your dog feels, not just what they do.

• Trigger. Anything that sets off a strong reaction, like other dogs, bikes, strangers, the doorbell or thunder.
• Threshold. The point at which your dog becomes too stressed or excited to think and learn. Below threshold, they can notice the trigger and still take treats. Over threshold, they bark, lunge, freeze or panic.
• Under threshold. The sweet spot for training. Your dog notices the trigger but stays calm enough to learn.
• Reactivity. An overreaction to everyday things, often barking or lunging on leash. It usually comes from fear, frustration or overexcitement, not aggression.
• Trigger stacking. When several stressful things build up until your dog reacts. A loud truck, then a dog, then a stranger reaching to pet them can push a usually calm dog over the edge.
• Desensitization. Exposing your dog to a trigger at a very low level they can handle, then increasing it slowly. Playing thunder sounds very quietly is an example.
• Counterconditioning. Changing how your dog feels about a trigger by pairing it with something wonderful. Every time a dog appears in the distance, chicken appears. Over time, other dogs start to predict good things.
• Look at that (LAT). A game where you mark and reward your dog for calmly looking at a trigger. It teaches them they can notice scary things and then check in with you.
• Engage, disengage. A related game. Your dog looks at the trigger (engage), then looks away (disengage), and gets rewarded for both steps.
• Flooding. Exposing a dog to a trigger at full intensity until they stop reacting. It's not recommended because it can make fear worse.
• Calming signals. Body language like lip licking, yawning, sniffing the ground and turning away that dogs use when they feel uneasy.

If these terms describe your dog, you're not alone, and help is available. Our dog body language guide shows what stress signals look like, and our thunderstorm anxiety guide walks through desensitization step by step.

Everyday skills you'll hear about

These are the skills most trainers focus on for family dogs.

• Recall. Coming when called. Often the most important safety skill you can teach.
• Loose leash walking. Walking without pulling, with slack in the leash. Not the same as a formal heel.
• Heel. A precise position at your side, usually on the left, often used in competition.
• Leave it. A cue that means ignore that item and look at me instead.
• Drop it. A cue that means let go of what's in your mouth.
• Place or mat. Going to a specific bed or mat and staying there, useful for doorbells and dinner time.
• Settle. Relaxing and lying down calmly, a skill many busy dogs need to learn.
• Impulse control. Your dog's ability to wait and make good choices even when excited, like not bolting through an open door.
• Resource guarding. When a dog protects food, toys or spaces by stiffening, growling or snapping. Very common and treatable with the right help.

Leash pulling is one of the most common problems families face. Our leash pulling guide puts loose leash walking into a step-by-step plan.

Trainer titles and credentials

Dog training isn't regulated in the US, so anyone can call themselves a trainer. Knowing a few credentials helps you choose wisely.

• CPDT-KA. Certified Professional Dog Trainer, Knowledge Assessed. A widely recognized certification from the Certification Council for Professional Dog Trainers.
• KPA CTP. A certification from the Karen Pryor Academy, focused on clicker and reward-based training.
• Veterinary behaviorist (DACVB). A veterinarian with specialized board certification in animal behavior. They can diagnose behavior problems and prescribe medication when needed.
• Canine Good Citizen (CGC). An AKC program and test for good manners at home and in public. A fun goal for many families.
• Socialization window. The period from about 3 to 14 weeks of age when puppies most easily accept new experiences.

When interviewing a trainer, ask how they reward good behavior and what happens when a dog gets it wrong. A good trainer will explain their methods clearly and welcome your questions.

Terms that cause the most confusion

A few training words get misunderstood more than any others. Clearing these up can save you a lot of frustration.

• Dominance. Many old training ideas were based on dogs trying to be the alpha. Modern behavior science shows most problem behaviors come from fear, frustration, lack of training or unmet needs, not a bid for rank.
• Stubborn. Usually a sign the task is too hard, the reward isn't worth it or there's too much distraction. Lower your criteria and try again.
• Bribe vs. reward. A bribe is shown before the behavior to get it to happen. A reward comes after. Lures are fine early on, but fade them so you're rewarding rather than bribing.
• Punishment. In training, it simply means anything that makes a behavior less likely. Ignoring jumping counts as negative punishment.

For more surprising facts, see our list of dog myths vets wish you'd stop believing.

Putting it all together: a real example

Let's say your dog barks and lunges at other dogs on walks. Here's how a trainer might use the glossary to help:

First, they'd identify the trigger (other dogs) and find your dog's threshold, maybe 30 feet away. They'd work under threshold at that distance using counterconditioning, pairing the sight of dogs with high-value treats, and a marker to tell your dog when they've looked calmly. Over time, with desensitization, the distance shrinks. They'd watch for trigger stacking on busy days and keep sessions short.

Suddenly the jargon becomes a clear, kind plan. That's the real power of knowing the words.

Using these terms to choose a trainer

Now that you know the vocabulary, you can ask sharper questions when you're comparing classes or private trainers. Good trainers welcome questions and explain their methods in plain language. Here are a few worth asking:

• What do you use as reinforcers?. Listen for treats, toys, play and praise, matched to what each dog enjoys.
• What happens when my dog gets it wrong?. A great answer sounds like we make it easier, or we manage the setup so they can succeed. Be wary of answers built around corrections or pops on the leash.
• How do you handle a dog over threshold?. Look for answers about creating distance, ending the session or lowering criteria.
• Do you use any aversive tools?. Reward-based trainers will say no to prong, choke and shock collars.
• How will you help me practice at home?. Training happens mostly between classes, so homework, videos and clear plans are a big plus.

It's also worth watching a class before you sign up. Dogs should look loose, curious and engaged, and owners should look like they're having fun. If you see lots of stress signals like yawning, lip licking and tucked tails, keep looking. Most areas have several options, and the right fit makes a huge difference for both you and your dog.

What a great training session looks like

A few simple habits make every session more effective:

Keep it short. Three to five minutes is plenty for most dogs, especially puppies. Two or three short sessions a day beat one long one.

End on a win. Finish with something easy your dog knows well, so they walk away feeling successful.

Use the right reward. Match the reward to the difficulty. Kibble may work in the kitchen, but the park calls for chicken.

Track progress. Jot down what you practiced and how it went. It's motivating to see how far you've come over a month.

Cheat sheet: the 10 terms to learn first

If you only remember ten words from this glossary, make it these:

• Cue: the signal for a behavior.
• Marker: yes or click at the right moment.
• Reward: what your dog gets for doing it.
• Positive reinforcement: add good things to get more of a behavior.
• Release word: tells your dog they're done.
• Luring: guiding with a treat.
• Three Ds: duration, distance, distraction.
• Threshold: too stressed to learn.
• Counterconditioning: change the feeling.
• Generalization: practice everywhere.

• Jargon describes simple ideas. Cue, marker, reward is most of it.
• Positive means adding. Not necessarily nice.
• Respect threshold. Learning stops when stress is too high.
• Build the three Ds slowly. One at a time.
• Choose reward-based trainers. Backed by veterinary behavior groups.

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What is a marker word in dog training?

A word like yes that tells your dog the exact moment they did the right thing, followed by a reward.

What is the difference between a cue and a command?

They mean the same signal. Many trainers prefer cue because it focuses on communication rather than force.

What does under threshold mean?

Your dog notices a trigger but is calm enough to take treats and learn.

What is counterconditioning?

Pairing something your dog fears with something they love so their feelings change over time.

What is positive reinforcement?

Adding something your dog likes after a behavior so it happens more often.

Is positive punishment bad?

Veterinary behavior groups advise against it because it can increase fear and aggression.

What is an extinction burst?

A short spike in a behavior just before it stops because it no longer gets rewarded.

What does generalization mean?

Your dog understanding a cue in new places, with new people and distractions.

Do I need a clicker?

No. A short word like yes works well. Clickers are just very consistent.

How do I find a good dog trainer?

Look for reward-based methods and credentials like CPDT-KA, and ask how they handle mistakes.