“All puppies are blank slates.” “If you do everything right with your puppy, you’ll have a great adult dog.” “If dogs have behavioral issues, we should blame the handle end of the leash.”

These are common misconceptions I hear as a trainer, and they make me so very sad. Behavior is a combination of nature and nurture, and if we could just take a moment to look logically at these myths, we would see just how silly they are.

Photo by Tavallai

Genetics influence behavior. This is part of the reason we have breeds: if you want a dog to work your sheep, you’re going to choose a Border Collie, not a Brittany Spaniel. Even though the two dogs have the same basic size and shape, one is more likely to have the instinctive motor patterns to do the work than the other. Getting a Border Collie whose parents…

It never fails—someone always says it. In an recent online discussion about a trainer known for using less-than-gentle methods, someone made a comment that sounded a lot like this: “Positive training is fine for smaller dogs and puppies, and maybe even some adults, but there are some dogs that need a heavier hand.” Really? Because that sounds an awful lot like justification for jerking, yanking, shocking, and other things done to dogs in the name of training.

I’ve heard the excuse for heavy-handedness put like this: “They’re red zone dogs” (somehow that term always makes me visualize dogs with red, flashing sirens over their heads) or something similar. The term is meant to indicate dogs who are severely aggressive, and often the trainer has been brought in as last-ditch effort before the dog is euthanized. In my years of working in canine training and behavior, I’ve worked with many of…