
If you’ve adopted a rescue dog, you’ve probably heard about the 3-3-3 rule: 3 days to decompress, 3 weeks to learn your routine, 3 months to feel at home. It’s a comforting framework—a timeline that suggests there’s an endpoint to the uncertainty, a moment when your dog will finally “settle in.”
But here’s what I wish someone had told me when I brought home my rescue dogs: the 3-3-3 rule is a general guideline, not a guarantee. And that dog who seems to “regress” around the three-month mark? They’re not backsliding. They’re finally showing you who they really are.
Why the 3-3-3 Rule Exists (And Why It Helps)
The 3-3-3 rule gives new rescue dog guardians something tangible to hold onto during those early, overwhelming days. It acknowledges that adjustment takes time and follows a general pattern:
- 3 Days: Your dog is likely overwhelmed, possibly shut down, and running on survival mode. They may not eat much, might hide, or seem unusually “easy.”
- 3 Weeks: They’re starting to understand the rhythm of your household. When walks happen, where the food comes from, which sounds are normal.
- 3 Months: The honeymoon period ends. Your dog feels secure enough to show you their authentic self—quirks, fears, triggers, and all.
This framework is helpful because it sets realistic expectations and reminds us that early behavior isn’t the whole story. But it’s also where things get complicated.
Every Dog Is Different: Understanding L.E.G.S.
The truth is, there’s no universal timeline for how a dog adjusts to a new home. Some dogs bloom within weeks. Others take six months, a year, or longer to fully decompress. To understand why, we need to look at what shapes each dog’s experience: their L.E.G.S.—Learning, Environment, Genetics, and Self.
Kim Brophey’s L.E.G.S. framework helps us understand that behavior isn’t random. It’s the result of multiple intersecting factors that are unique to each individual dog.
Learning: What Has This Dog Experienced?
A dog’s history profoundly affects how they adjust to a new home.
- A dog who spent their first year in a stable home before ending up in rescue may adjust relatively quickly because they already have a foundation of trust with humans.
- A street dog who survived by avoiding people may take months to believe that hands reaching toward them won’t cause harm.
- A dog who lived in multiple foster homes might seem to adjust quickly—because they’ve learned to adapt to change—but they may never fully relax because they’re waiting for the next move.
The 3-3-3 rule can’t account for whether your dog learned that the world is safe or that it’s something to be feared. Learning shapes everything.
Environment: What World Are They Living In Now?
The environment you bring your dog into matters just as much as the one they came from.
- A rescue dog moving from a chaotic shelter into a quiet apartment may need more time to adjust to silence than one moving into a bustling household with kids and other pets.
- A dog who lived outdoors their whole life may find indoor living—with its strange sounds, reflective surfaces, and confined spaces—disorienting and stressful.
- Your daily routine, the other animals in your home, even your neighborhood’s noise level all affect how quickly a dog can decompress.
One dog’s three weeks might be another dog’s three months, simply because their new environment presents different challenges.
Genetics: Who Is This Dog at Their Core?
Breed tendencies and individual temperament play a significant role in adjustment.
- A herding breed may feel anxious in a home where there’s nothing to “manage,” making their adjustment rockier.
- A hound bred for independence might seem aloof for months, not because they’re traumatized, but because bonding deeply with humans isn’t hardwired into them the same way it is for a velcro breed.
- Some dogs are genetically more adaptable and resilient; others are more sensitive to change and take longer to feel secure.
Genetics don’t determine destiny, but they do influence how a dog experiences and responds to their world. The 3-3-3 rule doesn’t account for the fact that some dogs are simply wired to take things slower.
Self: Who Is This Individual Dog?
Finally, there’s the dog’s unique sense of self—their age, health, current emotional state, and personal preferences.
- A senior dog may take longer to adjust because change is harder on an aging body and mind.
- A dog in chronic pain might seem reactive or shut down, not because of their history, but because they don’t feel well.
- An adolescent dog might appear to adjust quickly and then “fall apart” during their teenage months—not because they’re regressing, but because adolescence is hard.
Every dog is an individual. The 3-3-3 rule can’t capture that.
The “Regression” That Isn’t a Regression
Here’s the part that catches people off guard: around the three-month mark, many rescue dogs suddenly seem to get worse.
The dog who was quiet and polite starts barking at visitors. The dog who walked beautifully on leash starts lunging at other dogs. The dog who seemed fine suddenly becomes anxious when left alone.
Guardians panic. “Did I do something wrong? Is my dog broken? Are we going backward?”
No. Your dog is finally showing you who they really are.
The Honeymoon Period Is Real
In those early days and weeks, most rescue dogs are in survival mode. They’re not relaxed—they’re suppressed. They’re trying to figure out the rules, stay safe, and avoid doing anything that might get them moved again. This often looks like a “perfect” dog: quiet, compliant, easy.
But as your dog starts to feel safe, that suppression lifts. They stop performing and start being. The behaviors you see emerging aren’t new problems—they’re your dog’s real personality, real fears, and real needs finally surfacing.
This isn’t regression. It’s revelation.
What You’re Actually Seeing
When your dog starts showing reactivity, anxiety, or other challenging behaviors around the three-month mark, you’re seeing:
- Trust: They feel safe enough to express discomfort instead of shutting down.
- Authenticity: The polite stranger mask has come off, and you’re meeting the real dog.
- Communication: They’re finally telling you what they need, what scares them, what’s too much.
Yes, it’s harder than the honeymoon period. But it’s also more honest. And honesty is what allows you to truly help your dog.
So What’s the Timeline, Really?
There isn’t one. Not a fixed one, anyway.
Some dogs genuinely do follow something close to the 3-3-3 rule. Others take six months to decompress. Some need a full year before they stop waiting for the other shoe to drop. And some dogs—especially those with significant trauma, genetic sensitivity, or ongoing health issues—may always carry a baseline of vigilance that never fully disappears.
And that’s okay.
The point of understanding L.E.G.S. isn’t to diagnose your dog or predict their timeline. It’s to release yourself from the pressure of thinking there’s a “right” way your dog should be adjusting and to instead meet them where they are.
What You Can Do Instead of Waiting for a Timeline
Rather than counting days and weeks, focus on:
- Observation: Notice what your dog is telling you. Are they eating? Sleeping? Playing? These are better indicators of comfort than a calendar.
- Consistency: Provide predictable routines and boundaries. Dogs feel safer when they know what to expect.
- Patience: Let your dog set the pace. Some dogs need weeks of decompression before they’re ready to start learning. Others need structure right away to feel secure.
- Flexibility: Be willing to adjust your expectations based on who your dog actually is, not who you hoped they’d be.
And when the honeymoon period ends and your dog’s real self emerges—the anxiety, the reactivity, the quirks—don’t see it as failure. See it as your dog finally trusting you enough to be honest.
The Real Work Begins After the Honeymoon
The 3-3-3 rule is a helpful starting point. It reminds us that adjustment takes time and that early behavior isn’t the full picture. But it’s not a prescription, and it’s not a finish line.
The real work—the work of truly understanding your dog, meeting their needs, and building a relationship based on who they actually are—begins when the honeymoon ends. When your dog finally feels safe enough to show you their fear, their frustration, their confusion.
That’s not regression. That’s trust.
And trust, messy and complicated as it may be, is exactly what you’ve been working toward all along.
Does your dog’s adjustment look different than the 3-3-3 rule suggested? That’s not only normal—it’s expected. Every dog is shaped by their unique combination of learning, environment, genetics, and self. There’s no single timeline for healing, and there’s no “right” way to settle in. The best thing you can do is meet your dog where they are and let them show you who they really are, one honest moment at a time.









