Littermate Syndrome: What It Is, What It’s Not, and How to Raise Two Puppies the Right Way

If you’ve ever dreamed of bringing home not one, but two adorable puppies to love and raise together, you’re not alone. I hear this desire all the time. The bond,…

Ara HugheyAra HugheyCertified Tier II Puppy Evaluator

Jul 18, 2025
Two fluffy brown Shih Tzu puppies wearing pearl necklaces sit close together against a white background. The Divine Pups logo with a puppy illustration appears in the upper left corner.

From the Divine Pups blog

If you’ve ever dreamed of bringing home not one, but two adorable puppies to love and raise together, you’re not alone. I hear this desire all the time. The bond, the cuteness, the thought of instant companionship for your pups…it sounds perfect.

But if you’ve started digging online, chances are you’ve also stumbled across some serious warnings about something called Littermate Syndrome. And now you’re left wondering, should I be worried?

Let’s take a moment to break it all down together.

What Littermate Syndrome Actually Is

First things first – Littermate Syndrome is not a medical diagnosis. It’s a term used to describe a pattern of behavioral challenges that sometimes show up when two puppies, usually from the same litter, but not always, are raised together in the same home, at the same time.

At its core, it’s about dependence. When puppies bond too tightly with each other, they may:

  • Struggle to connect deeply with their humans
  • Have a hard time learning independence
  • React to new situations by looking to their sibling instead of their family

That over-attachment can lead to real-world issues like:

  • Separation anxiety
  • Poor recall or focus during training
  • Stress when apart from one another
  • Rivalry or aggression, especially in same-gender pairs

But here’s the real truth…

What the Internet Gets Wrong

Littermate Syndrome is not guaranteed.

We’ve raised dogs for years, and what we’ve learned is that it’s not just about having two puppies, it’s about how they’re raised. The internet tends to paint this as a worst-case scenario that always happens. But with the right structure, support, and training, it can absolutely be prevented.

And no, it doesn’t only happen to actual littermates. Any two pups of similar age raised together without intentional individual training can develop these challenges.

Why Some Breeders Say No to Duo Adoptions

You’ll see a lot of breeders discourage adopting two puppies at once. That’s usually not coming from a place of judgment; it’s just that most families aren’t equipped with the tools or support to do it well, and they don’t want to see their puppies placed in situations that can lead to long-term issues.

But that’s where things are different here.

As a certified dog trainer and experienced breeder, I’ve helped many families raise two puppies together successfully. It just takes more mindfulness, structure, and follow-through.

What We Tell Our Divine Families

We support families who feel called to adopt two puppies, but we do it differently.

When you bring home two pups from Divine Pups, you don’t go it alone. We walk with you every step of the way, with:

  • Individual training plans tailored to each pup’s temperament
  • Structured crate and sleep routines to build confidence and independence
  • Guidance on feeding, potty breaks, and one-on-one bonding to prevent co-dependence
  • Clear signals on when to separate, when to let them play, and what to watch for

We also teach you how to watch for compatible play styles. Equal energy, mutual respect, and shared communication cues are essential. 

Key Takeaway

Raising two puppies isn’t impossible, but it is a commitment. It takes more time, more intentionality, and more support. If you’re willing to show up for that, you absolutely can raise two well-balanced, confident pups who grow up with strong bonds to you and to each other.

At Divine Pups, we believe it’s not about fear, it’s about preparation. Whether you’re raising one puppy or two, we have your back.Check out who is AVAILABLE Divine Pups, your match might be waiting for you.

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Ara Hughey
Filed under: Dog Behavior

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Ara Hughey

Written by

Ara Hughey

Ara raises Shih Tzus in Houston, Texas, and writes about temperament, development and the small daily things that make a good match. Every puppy is born with a divine purpose.

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