When you reward your dog, does your dog know which moment earned it? Not “was I generally doing well”, but the exact instant. The stride, the head position, the split-second their butt hit the ground.
Most of the time, they don’t. And it’s not because your dog is dense or you’re a bad trainer. It’s because there’s almost always a gap between the behavior and the reward, where you’re reaching for the treat, stepping toward them, digging the toy out of your pocket… and in that gap, your dog keeps moving. By the time the reward actually lands, you’re often not rewarding the thing you meant to reward anymore. You’re rewarding whatever happened to be true the instant the reward actually finally showed up.
The Invisible Training Problem
Trainers call this credit assignment: does the dog actually know what they’re being credited for. It’s one of the most overlooked pieces of dog training, precisely because it’s invisible both when it’s working and when it’s failing. You don’t see the mismatch directly. You just see a behavior that’s a bit inconsistent, a dog that seems to “mostly” get it, contacts that are sometimes clean and sometimes not. It’s easy to chalk that up to the dog, or to not enough reps, when the real issue is timing.
What a Marker Actually Fixes
A properly conditioned marker solves this instantly, because it’s a sound your dog already associates with reward. The moment you make that sound, you’ve locked in the exact instant, even if the actual treat or toy doesn’t show up for another two or three seconds. Your dog isn’t guessing what earned it. You told them, the second it happened.
This is the whole reason markers exist in serious dog training, and it’s the single biggest thing separating a marker from just an enthusiastic “good dog!” Enthusiasm tells your dog something good is happening in the general vicinity of now. A marker tells them exactly what/when, and SO much more.
Why This Matters Even More in Agility
The further your dog is from you, the faster things are moving, and the more precise the criteria, the more this matters. A contact criteria at speed. A tight weave pole entry. A distance send to an obstacle 20 feet away. In every one of these situations, delivering a reward “right then” is physically impossible because obviously, you can’t teleport a reward to your dog mid-stride. Credit assignment is doing all the real work in these moments, whether you’ve deliberately built it or not.
This is reason #1 of several I’ll be walking through; why a real marker system is worth building in the first place. I’m obsessed! More on that soon.
There’s a lot more to KNOW about why markers work the way they do. I’ll be sharing the rest of my thoughts on the topic of markers in the next few blog posts – stay tuned!
