ACM Mastiffs & Xoloitzcuintles

ACM Mastiffs & Xoloitzcuintles Loving, raising & preserving Mastiffs & Xolos.
🐾 Home-raised, health-tested, and well-loved
💌Follow for puppy updates, education & joy!
💬Inquiries welcome.

Michigan, USA. 🇺🇸 I'm the breeder behind ACM Mastiffs located in Frederic, MI. At ACM, I hope to spread the love of the Mastiff far and wide. I believe this incredible breed should be in almost all homes! My dogs are bred for health, temperament, quality, longevity, and conformation. I believe in any and all health testing, and I strongly think that any potential 200-pound dog should have the best

start at life. The Mastiff is a wonderful breed that truly is one of a kind! I would be honored to connect you with your next Mastiff puppy!

🏡 Seeking a Loving Home for Our 4-Year-Old Male Mastiff 🐾We are looking for the perfect forever home for our sweet 4-yea...
01/20/2026

🏡 Seeking a Loving Home for Our 4-Year-Old Male Mastiff 🐾

We are looking for the perfect forever home for our sweet 4-year-old male Mastiff. He is:

• Kennel & potty trained
• Great with other dogs
• Has not been around cats, but we don’t anticipate issues
• A true gentle giant – total couch potato energy
• Loves being outdoors
• Amazing with children, especially little ones
• Excellent on a leash – no pulling
• Calm, affectionate, and loyal
• DNA clear, some OFAs completed-

He embodies everything people love about the breed: laid-back, loving, and devoted. - with a little hesitancy towards new people.✨

He also has a few AKC points ✨

Rehoming fee: cost of neuter only
This is to ensure a serious, committed home.

We are being very selective and want a family who understands the breed and will cherish him as a member of their family. If you think you might be the right fit, please message me privately.

With the recent and unexpected passing of Andromeda, ACM Mastiffs has come to a halt.She was not only my soul dog, but a...
01/11/2026

With the recent and unexpected passing of Andromeda, ACM Mastiffs has come to a halt.

She was not only my soul dog, but also my only female. From the very beginning, ACM was built with intention — we never aimed to be a large breeding operation or house multiple females. Everything we did was rooted in ethics, purpose, and integrity.

Losing Andromeda has been devastating. I won’t pretend I’m excited to return to the mastiff community, because I’m not. At the same time, I worked incredibly hard to build ACM, and closing this chapter isn’t easy.

Everything I know, I learned beside this dog — ethics, showmanship, loyalty, honesty, pain, devotion. This breed is unlike any other, and it was truly an honor to be owned by Andromeda.

For those who may not follow my personal page, I wanted to share that for the foreseeable future, my mastiff journey has come to an end.

That said, I may be venturing into the Xolo world around March. If that’s something you’re interested in, I invite you to continue following along.

Thank you for supporting ACM Mastiffs & Xolos. What a privilege this journey has been. 🖤

….stay tuned 👀 Happy holidays in the mean time everyone!
11/29/2025

….stay tuned 👀
Happy holidays in the mean time everyone!

I want to take a moment to thank everyone who has reached out with messages and applications. I know I have not been as ...
09/19/2025

I want to take a moment to thank everyone who has reached out with messages and applications. I know I have not been as quick to respond as I normally am, and I truly apologize for the delay.

I’m currently working through a personal matter. While it may not be “professional,” it is very real, and I hope you’ll understand that life sometimes asks us to slow down. Please know that your inquiries and interest mean a great deal to me, and I will get back to each and every one of you as soon as I’m able.

Thank you for your patience and kindness during this time.

We are still holding hope for our up and coming breeding. 🤍

Did you know the English Mastiff is one of the oldest and largest dog breeds in the world? Dating back thousands of year...
09/02/2025

Did you know the English Mastiff is one of the oldest and largest dog breeds in the world? Dating back thousands of years, Mastiffs were once guardians of castles and companions to warriors. Today, they are known not for battle, but for their unmatched loyalty, calm temperament, and enormous hearts. 💛

✨ What Makes the English Mastiff Special?
• Size with Grace: Males can weigh 160–230+ lbs, but don’t let their size fool you — Mastiffs are often described as “gentle giants.”
• Family-Oriented: They thrive on being close to their people, often leaning against you for comfort or quietly following you from room to room.
• Protective Yet Loving: Naturally watchful, Mastiffs are devoted guardians, but with proper socialization, they are warm, patient, and incredibly affectionate.
• Calm Companions: Known for their steady nature, they prefer lounging at your feet to constant activity, making them ideal for families who want a relaxed, loyal friend.

Owning an English Mastiff means opening your life to a breed that embodies courage, loyalty, and tenderness all in one massive, wrinkly package. 🐶❤️

At ACM Mastiffs & Xolos, we are proud to share our love for this incredible breed and continue the tradition of raising them with care, knowledge, and respect.

📸 Share your favorite Mastiff moments in the comments — we’d love to see your gentle giants!

It’s time I start sharing with you all about the Xoloitzcuintli breed - since thats also what we have here. They are a l...
08/26/2025

It’s time I start sharing with you all about the Xoloitzcuintli breed - since thats also what we have here. They are a little different than thee Mastiff, or ‘dog’ in general .

So thought I’d share with you .

The Xoloitzcuintli — or Xolo for short — is far more than an ancient Mexican breed. They are considered sacred guardians, healers, and companions who walk in step with their person’s soul. For thousands of years, Xolos were believed to guide spirits across worlds, protect homes from negative energy, and hold an almost supernatural awareness of their human’s emotions.

To live with a Xolo is not the same as owning “just a dog.” They do not merely follow; they listen. They do not simply sit by you; they tune into your heartbeat, your silence, your unspoken thoughts. A Xolo becomes a mirror of their human’s inner world — sensing joy, absorbing pain, and offering presence when words fail.

This bond is often described as a soul tie — a connection so intuitive and ancient that it feels predestined. Their gaze is steady, their touch grounding, their loyalty unwavering. In return, they ask only for respect and closeness.

When you see me walking with my Xolos, you are not just seeing dogs at the end of a leash — you are witnessing an ancestral companionship that stretches back over 3,000 years. A living reminder that some ties are eternal, and some guardians are sent by spirit itself.


🐾 What Breeders Rarely Speak About…Everyone loves the photos of big, beautiful dogs and chubby little puppies. People se...
08/24/2025

🐾 What Breeders Rarely Speak About…

Everyone loves the photos of big, beautiful dogs and chubby little puppies. People see wagging tails, fat bellies, and perfect little faces — and they think it just “happens.” That puppies are simply born fat, healthy, and polite, like it’s automatic.

But behind every cute picture is a story that few will ever know.

Every birth is a gamble. No matter how many times you’ve done it, no matter how carefully you’ve prepared, each whelping feels like the first time. You can study, plan, test, and pray — and still, things can go wrong. A mother can be lost in delivery. A puppy can fade before it even takes its first breath. Some survive only because the breeder has spent nights on the floor, syringe- or bottle-feeding every two hours, alarms set around the clock, praying that tiny lungs keep breathing.

What most don’t realize is that this doesn’t last for a day or two — it can be three weeks of round-the-clock care until puppies can eat on their own. And even then, the work never stops.

They don’t see the constant cleaning — the piles of laundry, the endless disinfecting, the battle to keep infection out. They don’t see the exhaustion of waking every hour, of sleeping with one ear open, of giving up weekends, holidays, and sick days — because puppies can’t wait, and mothers can’t wait.

They don’t see the finances behind it: the genetic testing, the stud fees (sometimes thousands, especially if you’ve flown overseas for the right match or don’t own the stud), the supplements, the milk replacers, the vaccines, the food, the photo sessions, the ads, the emergency vet visits. People love to multiply the number of puppies by the “price tag” — but they never subtract the investment of money, time, nerves, tears, and knowledge that goes in long before a puppy is ever ready for a home.

They don’t see the breeder’s heart when choosing families — the hours of conversations, the interviews, the refusals when something doesn’t feel right. Because it’s not about selling a puppy, it’s about sending a piece of your heart into the world. And it is always scary.

And then comes the part we almost never talk about. The grief. Every breeder knows it: with each loss, a piece of us goes too. Whether it’s a puppy that doesn’t make it, a beloved dog crossing the rainbow bridge, or the day we watch our babies leave with new families — breeders die a little inside every time. We tell ourselves that forever exists, that the years we get will be enough. But when goodbye comes, it never is.

Yes, there are joys. Endless joys. Watching a litter thrive, seeing families light up when they meet “their” puppy, watching updates of happy, healthy dogs living their best lives. That joy is what keeps us here. But the truth is, the medal has two sides. Behind the smiles are sleepless nights, heartbreaks, and sacrifices that most will never see.

And sometimes… sometimes the weight of it all feels unbearable. After a devastating loss, many breeders whisper “I’m done. I can’t do this anymore.” And yet — we return. Again and again. Because the love we have for these dogs runs deeper than logic, deeper than exhaustion, deeper than grief. It is both our burden and our greatest blessing.

So the next time you see a photo of a beautiful dog, or a fat little puppy with bright eyes, remember this: it didn’t “just happen.” There are invisible hands, tired eyes, and hearts both breaking and bursting with love behind that picture. That is the life of a breeder.

We may be silent about it most of the time. But it is always there. 🐾❤️

👉 This is the heart and soul of ACM Mastiffs and Xolos — where love, sacrifice, and devotion shape every puppy we raise.

So the next time you wonder about the cost, wish for more updates, or ask why registration matters — please remember the love, sleepless nights, heartbreaks, and sacrifices that stand behind every single puppy. For us, this is never ‘just a pet’… it’s a piece of our heart.

This is a legacy.
Ethical. Is best.

Throw back photo. 🤍

✨ Hopefully a few of my families don’t mind me sharing here ✨Here are some pictures of a few of the 13 pups that will so...
08/19/2025

✨ Hopefully a few of my families don’t mind me sharing here ✨

Here are some pictures of a few of the 13 pups that will soon be turning 4 years old this December. 🐾💛

I am just so proud of the dogs they’ve grown into — each one so special in their own way!

👉 If you have one of these December babies, drop a picture below! I’d love to see how they’re doing and celebrate them together. 🎉🐶

08/18/2025

✨🐾 Exciting News from ACM! 🐾✨

We’re preparing for Andromeda’s final breeding 💕 This special girl has given us so much joy, love, and companionship through her 🐶’s, and we’re honored to plan one last chapter with her.

If you’ve been waiting for a pup from us—this will be your last chance for the foreseeable future. 🐶❤️

📌 Stay tuned here for updates as we move forward with planning, timing, and re-pairing with King- from the first litter. We’ll be sharing every step of the journey so you don’t miss out!

Thank you to all the wonderful families who’ve loved and cherished her pups over the years. We can’t wait to see what this final adventure brings. ✨

Show me your land hippos 🦛
07/26/2025

Show me your land hippos 🦛

Food for thought.Copied from another post- thought I’d share here.Preventing unwanted litters is a goal we all share—but...
07/18/2025

Food for thought.
Copied from another post- thought I’d share here.

Preventing unwanted litters is a goal we all share—but it's time to rethink the surgical approach. Hysterectomies and vasectomies, which preserve hormonal balance, can safely be performed as early as 8 weeks of age, making dogs sterile without disrupting their natural hormones.

In this study, researchers looked at whether the age at which dogs were spayed or neutered, meaning how long they were exposed to their natural s*x hormones, affected how healthy they were in old age. They studied a group of long-lived pet dogs to learn what helps dogs live longer, healthier lives. Dogs with the fewest age-related health problems were considered the most “robust.”

The results showed that both male and female dogs who kept their hormones longer (i.e., were spayed or neutered later) were 3 to 10 times more likely to be healthy in old age compared to those altered earlier. Once hormone exposure and age were taken into account, there was no difference in old-age health between males and females.

This study highlights how important s*x hormones may be for staying healthy later in life and shows that early-life decisions—like when to spay or neuter—can have long-term effects on health.

I hope everyone had a fantastic 4th of July — whether you celebrated, worked, or it was just another day. 🎆 As we move i...
07/05/2025

I hope everyone had a fantastic 4th of July — whether you celebrated, worked, or it was just another day. 🎆

As we move into the second half of 2025, I want to give an update on our girl Andromeda. Unfortunately, her most recent breeding attempt didn’t take due to a silent heat. We understand how disappointing this can be for those on our waiting list — and trust me, I feel it too. This program is more than a passion project; it’s a piece of my heart and a lifeline I’m committed to growing. We plan to re-attempt breeding late this year, and I encourage you to hang in there with us. Your patience means the world.

🐾 🐾 🐾

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Frederic, MI
49733

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