A marker word in dog training is a word that you consistently use to signal to your dog that they have performed a behaviour correctly and a reward is coming. It marks the exact moment the dog does what you want, making it easier for the dog to understand which behaviour is being rewarded. Common marker words include "Yes," "Good," or any short, distinct word you choose. The word should be consistent so the dog learns to associate it with positive feedback and rewards. How to Use a Marker Word: Choose a marker word: Pick something short and easy to say, like "Yes" or "Good." Pair it with a reward: Every time you use the marker word, immediately follow it with a treat or praise so your dog learns the association. Use it at the exact moment of the behaviour: For example, when teaching "sit," say the marker word the instant your puppy’s bottom touches the ground, then give the reward. Consistency is key: Always use the same word for marking behaviours and follow it with a reward. Using a marker word helps make communication clear between you and your puppy, speeding up learning and creating a positive training experience.