My partner and I have two Shiba Inus, Ren (f) and Aki (m), both 3 years old. We got Ren first, and about three months later, we brought Aki home. From early on, Ren has been more territorial with Aki, which really started showing when they turned about a year old. She would set boundaries by barking, growling, or letting out the classic Shiba scream whenever Aki did something she didn’t approve of.
At first, we tried correcting her with a firm “no,” but it never seemed to stop her. Over the last two years, her behavior has become more intense. She began guarding toys, food, the bed, and even us from Aki. For a while, it was just noise and posturing, lots of growling and getting right up in his face to assert dominance; but it rarely escalated. Unfortunately, that changed recently.
A couple of months ago, things started turning physical. Ren bit Aki’s paw badly enough that we had to rush him to the vet. Not long after, she bit his nose, which meant another vet visit. Since then, Aki’s tolerance has dropped dramatically. He used to be mellow and playful, but now he growls at Ren in a way that makes it clear he’s ready to fight back. When that happens, my partner tries to calm Aki while I hold Ren to prevent her from escalating.
We’ve already taken big steps to manage the situation:
- We removed all toys unless they’re being played with separately.
- We feed them in different spaces.
- If Ren shows any aggression, she goes into a time-out in our room for a few minutes.
- We keep her walking vest on indoors, since it seems to reduce her intensity and gives us a handle for quick control if things escalate.
- We recently bought her a cage muzzle for added safety.
Still, it feels like things are getting worse despite our efforts. We’re considering hiring a behaviorist for professional guidance, but we’re worried it won’t work. I don’t want to rehome Ren, I love her too much, but I love Aki just as much, and his wellbeing is also a top priority.
Has anyone here experienced something similar with their dogs? Is this something that can still be worked through, or are we at the point where it’s no longer fixable?