OUR KENNEL: RESPONSIBLE BREEDING OF PYRENEAN MASTIFF AND JACK RUSSELL TERRIER
Our Breeding Philosophy: Passion, Respect and Family Experience
At Reis D'Aragón we breed out of vocation, not business. For over 17 years, we have devoted our time and passion to the family breeding of the Pyrenean Mastiff and the Jack Russell Terrier - two breeds we love deeply and that are part of our everyday life.
Our goal is not to breed many puppies, but to breed few, and breed them well: healthy, balanced, true to type, and with a sound temperament. Each pairing is carefully planned, each litter is awaited with joy, and every puppy receives the care and attention it deserves from the very first day.
For us, breeding means respect - respect for the health of our females, for the genetics of each breed, and for the families who trust us to welcome a new member into their home.
Selection and health: genetics, temperament, and trust
We select our breeding dogs based on clear criteria of health, morphology, and temperament.
For the Jack Russell Terrier, we carry out all genetic tests recommended for the breed, ensuring dogs free from major hereditary diseases (LOA, SCA, JBD, PLL, and DM). Even when we know that the parents are genetically healthy, we keep the habit of testing - because we believe in transparency and responsibility.
For the Pyrenean Mastiff, we work with blood lines chosen for their balanced temperament, strength, and noble character. The dogs living with us are healthy and active, and the males we collaborate with come from trusted breeders who provide hip dysplasia certificates and care for their lines with the same dedication and respect.
Each mating is carefully studied, seeking balance between morphology, temperament, and genetic heritage. We keep puppies that best represent what we aim form and sometimes we incorporate dogs from fellow breeders with whom we share a bond of trust and cooperation.
Our breeding philosophy for each breed
Pyrenean Mastiff: nobility, balance, and authenticity
At Reis D'Aragón, we breed Pyrenean Mastiffs that stay true to the traditional Aragonese type: large, strong, and well-proportioned dogs that combine power with elegance. We look for well-built, muscular yet agile specimens - never heavy or clumsy despite their impressive size.
We select noble, expressive heads with an intelligent, calm, and confident gaze. We value a balanced temperament above all: protective but never aggressive, affectionate with the family, and with a natural instinct for guarding and watchfulness.
Our Mastiffs must preserve the essence of the Pyrenean guardian dog - brave, dignified, and capable of protecting with serenity and determination.
We prioritize sound structure, a firm topline, fluid movement, and a stable character, avoiding any signs of shyness or aggression.
We breed Mastiffs that are both noble guardians and loyal family companions.
Jack Russell Terrier: intelligence, temperament, and balance
At Reis D'Aragón, we breed Jack Russell Terriers true to the original spirit of the breed: small, compact, and full of energy, with bright intelligence and a joyful temperament. We select well-proportioned dogs with a rectangular build, strong muscles, and a harsh or broken coat, faithful to the traditional British working terrier type.
We look for expressive heads with dark, lively eyes, semi-dropped ears, and an alert, intelligent expression. We especially value balanced, confident, and sociable temperaments - cheerful dogs who easily adapt to family life and make wonderful companions for children.
Our Jack Russells must retain the authentic essence of the breed: brave but not reckless, curious but not nervous, affectionate yet independent.
We prioritize a stable and confident temperament, avoiding any trace of fear or excessive excitability.
We breed Jack Russells that are lively, affectionate, and well-balanced family companions.
Environment and well-being: freedom, contact and family life
Our kennel is divided between La Joyosa, a small agricultural village near Zaragoza, and a large, peaceful farm on the outskirts, where most of our Pyrenean Mastiffs live.
In La Joyosa we have our home, an old farmhouse with buildings facing the courtyard, where we raise our Jack Russell Terriers and where the female mastiffs come to give birth and care for their puppies.
In summer, we set up small pools so they can cool off - though they usually destroy them with great enthusiasm. There are always sunny and shady areas, and each dog has its favorite spot.
Everyday life is part of their socialization — our puppies grow surrounded by people, routines, and affection.
The adult mastiffs enjoy the outer farm, a safe and natural environment where they live freely. We visit them every day to feed them, check on them, and spend time together naturally.
The Jack Russells share our family life, joining in our daily routines and enjoying constant contact. The puppies are born in our home and, as they grow, move to specially adapted spaces in the courtyard where they can play and explore safely.
All our dogs live under veterinary supervision, with constant cleanliness and care. They are never confined or isolated - they live freely, surrounded by affection and daily human contact.
Our puppies: balance, temperament and lifelong support
Our Reis D'Aragón puppies grow up surrounded by care, play and socialization from birth.
We handle, observe and accompany their development every day - monitoring their weight, cleanliness, feeding, early stimulation, and regular contact with people and other dogs.
Both Jack Russell Terriers and Pyerenean Mastiffs learn to trust, to be handled, to respond to different stimuli, and to live in harmony before leaving for their new homes.
Our Jack Russell puppies grow up in a safe, family environment where they learn to play, explore, and trust.
When the time comes, each puppy goes home with a microchip, passport, vaccinations, health and sales contract, and registration in the Spanish Stud Book (L.O.E.) to process it pedigree.
We provide guidance before, during and after adoption - always honest, caring and available for any questions. Many of our puppies now live happily in homes across Spain and abroad, and some families have even come back years later to welcome another Reis D'Aragón companion.
Our Difference: Breeding with Purpose, Not Hurry
At Reis D'Aragón, we don't breed for numbers - we breed to preserve and to enjoy. We know each of our dogs personally, caring for their health, character, and happiness, and sharing our everyday life with them.
We don't sell puppies to anyone who cannot offer them a suitable life: our Pyrenean Mastiffs need space, and both of our breeds deserve committed and caring families.
Over the years, we have taken back some dogs whose families could no longer keep them, and whenever possible, we have found them a new home. That is our philosophy: responsibility, dedication, and genuine love for our dogs.
Responsible breeding means patience, contact, and care — every puppy receives personal attention.
In Summary
Reis D'Aragón is a family breeder with over 17 years of experience, dedicated to the responsible breeding of Pyrenean Mastiffs and Jack Russell Terriers.
We breed with a balance between tradition and well-being, guided by passion, care, and respect for every dog and every family who trusts us.
A calm, attentive gaze that reflects the serenity and nobility of the true Pyrenean Mastiff.
If you'd like to meet our puppies ...
We invite you to discover our current litters - the result of years of care, selection, and responsible breeding.
More about our Reis D'Aragón puppies
We care for every detail and guide families throughout the entire process. Learn more about how to choose the right puppy and how we ensure each one is ready for their new home:
How to choose a Pyrenean Mastiff puppy
Understand the temperament, needs, and key advice for living with a Pyrenean Mastiff.
How to choose a Jack Russell Terrier puppy
Find out if the Jack Russell Terrier fits your lifestyle and what to consider before welcoming one into your family.
Puppy delivery
Learn about the conditions, guarantees, and care each puppy receives before joining its new home.
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