My wife and I are having a disagreement. From time to time, our dog, Mohican, will grab a napkin or Kleenex and run behind the couch. If you try to reach back to get it from her, she’ll growl at you. I won’t tolerate a dog growling at me, so I shove the couch out of the way, grab the dog, and wrestle it from her. My wife thinks we should trade a treat for the garbage. What do you think? ~ Michael
Many dogs will growl (or even snap or bite) if they have something they consider valuable and someone tries to take it.
Growling is an early-warning sign. It’s possible that she may be sufficiently intimidated by your method to give up growling, but that won’t make her any more comfortable about being approached when she has something she really, really wants. In many cases, this will cause a dog to skip over her warning signals and move directly to biting. Definitely not what you want.
Also force-based methods work only for people confident enough and strong enough to carry them through. Imagine if one of your kids tried diving behind the couch to retrieve a napkin from the dog—she’s be far more likely to bite a child who attempted your maneuver.
Trading for a treat can be a good idea if the dog is taught to drop what she has so that you can safely pick it up. The best book on the subject is Mine: A Practical Guide to Resource Guarding in Dogs, by Jean Donaldson. You and your wife should read it to develop a plan that works for both of you, avoids aggressive behavior, and doesn’t scare your dog.