Dear Inquisitive Canine,

I have two dogs: a Dane and a Chihuahua. The Chihuahua intimidates the Dane. She won’t let him eat, play with toys, or do anything. I have to separate them or else he would live in a corner. She doesn’t bite or attack him. All it takes is a look or at most a growl. What can I do to restore my happy home?

Joan Mayer and her sidekick, Poncho

Joan Mayer and her sidekick, Poncho

My friend, “Shirley,” says the Dane is a wimp, but he’s fine with other dogs, and so is the Chihuahua. Help!

–– War Zone, with thanks

Dear War Zone,

Ah, yes, “sibling rivalry.” It’s a shame when family members don’t get along. Humans have been known to have arguments now and again, and from my experience as a dog trainer. I can tell you that our pet dogs are really no different.

From what you’ve described, it sounds like the Dane is being quite the “gentleman.” He is listening to his sister, reading all of her doggy body language and vocal communication, and doing what any smart dog would do –– not challenge her. It’s safer for him to back off, than to treat her like a squeaky toy and get in huge trouble. You and your friend “Shirley” can be thankful that he is a good listener.

As for your Chihuahua, she has certainly developed some undesired coping skills, at least by human standards. She may have at one time been unhappy about something and expressed herself using normal doggy communication (hard stare and growls). Her discontent may have gone unnoticed or ignored –– by the Dane and/or by you. If this is true, and she was completely ignored, then she will have gotten louder (or more assertive and intimidating) with each episode, until someone paid attention!

Other possible “triggers” could be “resources” and/or the Dane himself. Resource guarding is a strongly hard-wired (DNA) behavior, and can rear its ugly head at any time. For your Chihuahua, the resources could be food, a food bowl, toys, attention from you, or anything else she considers “valuable.” What started out as a “normal” reaction to wanting to guard things, turned ugly because once again she was either ignored, or she got “in trouble!” Maybe yelled at? Sent to her room? “Grounded?” Banished to the dungeon?

If this is true, and the attention she is receiving is more of “getting in trouble,” then she may have also started to associate the Dane with feelings of anxiety and frustration every time he is around, and in turn, lets these feelings be known right from the get-go.

Then there’s the human component: their communication starts (growls, hard stares), you tense up because you don’t like this type of behavior –– maybe using a not so cheerful voice –– which predicts nothing good for her, resulting in chaos and unhappiness all around.

No matter the cause, the approach is the same: create an environment where both dogs love being around each other. How do you achieve this? Simple. Pair each dog with something the other dog loves, then they’ll start to love that dog. Take it slow and steady –– baby steps, if you will. When you’re not training, manage your environment to help prevent both dogs from practicing objectionable behaviors.

» Training: the goal is to change your dogs’ perspective of how they see each other using classical conditioning techniques. Pretty “fancy” for dog training. But it’s simple and it works! Right now it sounds like the mere sight of one another brings on feelings of dread. You want to reverse that, right? This is the plan:

» The Chihuahua gets steak (or other high value yummies) and attention (happy talk from you) whenever the Dane is around. She’s ignored and gets nothing when he isn’t there.

» She gets lots of rewards whenever she is behaving nicely toward the Dane.

» If she behaves in a negative way, she doesn’t get yelled at. You can confine her to her own room, but again while providing enrichment (food toys, chewies, etc.).

» Her only “punishment” is that she doesn’t get the high-value food and attention from the rest of the family. Think of it as sending a child to his room with snacks and a video game, not “grounding” him.

» The Dane gets lots of yummy steak (or other high-value reward) whenever the Chihuahua is around. Pair her with something he loves, and he will love her … eventually. But it takes time, patience and consistency.

» Management: Remove all objects the Chihuahua likes to “guard” (or gets bossy over). Keep them apart from each other if necessary, but if you’re confining them to separate areas, provide enrichment so it’s not so much of a punishment. Include chewies, interactive food toys, etc. Also, make sure they’re tired from exercise so they’ll want to nap.

Most important, reward desired behaviors. Catch your dogs in the act of doing what you want, then reward them for it. Even being in the same room, and ignoring each other can be rewarded. It’ll flow over into “creating pleasant associations.” Both dogs will begin to associate the other dog being around with good things for themselves. You’ll know it’s working when they look at each other, then look at you for their reward. What a nice, simple and quiet way to create a “no war” zone.

— Dear Inquisitive Canine is written by Joan Mayer and her trusty sidekick, Poncho. Joan is a certified pet dog trainer and dog behavior counselor. Her column is known for its simple common-sense approach to dog training and behavior, as well as its entertaining insight into implementing proven techniques that reward both owner and dog. Joan is also the founder of The Inquisitive Canine, where her love-of-dog training approach highlights the importance of understanding canine behavior. If you or your dog have questions about behavior, training or life with each other, e-mail advice@theinquisitivecanine.com.

Joan Hunter Mayer is a certified canine behavior consultant, certified professional dog trainer, and founder of The Inquisitive Canine. She and her team are devoted to offering humane, pawsitive, practical solutions that work for the challenges dogs and their humans face in everyday life. Joan offers training and behavior consulting services both in person and online, dedicated to strengthening the human-canine bond. If you are feeling inquisitive and have dog training questions, email advice@theinquisitivecanine.com and click here for more training tips. The opinions expressed are her own.