Welcome to our kennel where our specialty is producing show quality Pyrenean Mastiffs
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Caring for your Pyrenean Mastiff


Feeding a growing giant breed dog is a balance with ensuring that your puppy is getting all the nutrition it needs, while ensuring that they do not gain too much weight for their frame too fast.  The bones in a giant breed puppy do not harden until they are around a year old.  Ideally, on a scale from 1 (completely emaciated and near death) to 10 (morbidly obese) with 5 being a perfect weight, you want your growing giant breed puppy to score at a 4 which will means they are lean where you can easily feel their bones, not easily see them.  How do you accomplish this goal while ensuring a growing puppy gets all the nutrition it needs?
Pyrenean Mastiffs take approximately 2 years to reach their full growth, and will continue to fill out after they reach their second birthday, especially males.  Males can take 4 to 6 years to reach their full weight and glory.  The feeding philosophy here at Pyrenean Mastiffs de Monte Sano does not mirror that of many established Pyrenean Mastiff breeders.  Many have a long-held belief that too much protein for a growing Pyrenean Mastiff is not good.  Because of this belief, they feed poorer quality dog foods with grain fillers and lower protein contents.  In addition, many transition their puppy to adult dog food at just a few months old, long before the puppy is finished growing thus reducing the protein content even further.  Unfortunately, many veterinarians, both in the US and in Europe share this long held belief.  Newer studies have proven this thought process to be totally false.  So why do they believe this?   We believe there are three reasons for this.  ​​​

1. Early studies did show that too much protein, carbohydrates and calcium caused growth problems in dogs.  But those studies did not break out the three components in independent studies to determine the real source of the problem.  Recent studies have been conducted on these three components independently and the results are in.   Puppy or dog food with a high protein content does not harm a puppy's growth in any way.  Nor does it cause a puppy to increase in size too fast.  The real culprit is too much calcium or too much carbohydrate, each independently or combined.  

2.  Dog food companies such as Science Diet, Eukanuba, and Royal Canine, have been marketing their food to breeders and veterinarian's for years.  They promote the false premise that too much protein can be bad because it justifies them using the cheaper grain fillers and/or a meat meal as a meat substitute. These companies sponsor dog events and provide financial support to veterinary schools and scholarships to veterinary students.   Did you know that most veterinary schools do not actually instruct their students in dog nutrition?  And if they do, guess who usually teaches the class?  Yes, a representative from one of these dog food companies.  And the money and kickbacks veterinarians make on the sales of these foods isn't a bad bonus either.

3.  Many of these breeders have fantastic dogs with fantastic pedigrees.  You could almost feed these dogs garbage and they would grow to be beautiful dogs.  Good nutrition is sometimes on the margins.  You can feed enough of a good thing that it won't harm the dog's growth, which is the balance many of these big name dog food companies walk in trying to make the most money on quality that is just enough to keep the dogs healthy while keeping the dog food company's profit margins big.  

The facts are, recent studies have shown that there really is no such thing as too much protein for a dog at any age or condition.  A high quality protein source, such as meat and fish, along with some grasses, fruits and vegetables, is a great balance of food.  It is the high quality animal protein that supplies the 10 essential amino acids that the growing puppies neethat their own system cannot produce.  While grains do provide some level of protein, they are not as digestible for the dog so they are a poor source of protein.  Yes, dogs are omnivores, yet they have a very strong carnivore bias.  Their teeth, their stomach and digestive tract are all specially designed to process meat effectively, not grains.  There is also the fact that since carbohydrates are found in these lesser expensive fillers, when protein content goes down carbohydrate content goes up which is not good.  It is the carbohydrates that add weight and can cause growth issues.

Pyrenean Mastiffs de Monte Sano dogs are fed a high protein grain free dog food from Orijens.  We begin with the Large Puppy Orijens until they are two years old before we transition to the adult food.  This dog food does not use any fillers of any kind.  It boasts 80% high quality meats and fish, with the remainder containing the needed grasses, fruits and vegetables.  It contains all necessary quantities of amino acids, minerals, vitamins, calcium and glucosamine needed for a growing giant breed puppy.  Supplementing with this dog food is not necessary.

There are many who feel the best source of food for a dog is a raw diet of meat, fruits and vegetables.  We do not feed a raw diet, nor do we recommend it with one exception.  That is because the nutritional needs of a growing giant breed puppy needs to be balanced ensuring they don't get too much calcium.  Unfortunately, you do not know the amounts of calcium your puppy is ingesting in a raw diet unless that raw diet is purchased from a dog food manufacturer that has done the analysis to know the nutritional content of a serving of the raw diet.  Also, raw diets can introduce your puppy or dog to harmful bacteria and parasites.  It is for these reasons we recommend using a high quality grain free kibble such as Orijens.  There are other brands that rate highly besides Orijens.  Before selecting the dog food you want to feed your growing Pyrenean Mastiff, do your homework.

In addition to Orijen Large Puppy food, Pyrenean Mastiffs de Monte Sano youngsters also get daily doses of Unfiltered Apple Cider Vinegar in their water, and Coconut Oil and Diatomaceous Earth in their food.  Unfiltered Apple Cider Vinegar helps skin rashes, skin irritation, tooth decay, infections and tear stains, as well as acts internally as a flea and tick preventative.  Apple Cider Vinegar can also be spritzed on the coat as a flea and tick preventative.  Coconut Oil contains Medium Chain Triglycerides (MCTs) which has antibacterial, antiviral, and anti-fungal effects.  It also helps to balance the thyroid which aides overweight dogs in loosing weight, and it also is a source of fuel and energy.  Coconut Oil aides in softening the skin and relieve dryness and it helps to repel fleas when taken internally, and to kill fleas or eliminate rough or flaking skin when applied topically.   Pyrenean Mastiffs can get hot spots and the Coconut Oil combined with the Unfiltered Apple Cider Vinegar has greatly reduced the frequency of this affliction in our dogs.  Finally, a daily dose of a food grade Diatomaceous Earth mixed with your Pyrenean Mastiff's food will naturally and safely eliminate roundworms, whipworms, pinworms and hookworms.  You can also dust it on the coat for external protection from parasites and fleas. Diatomaceous Earth is also a great detox solution, dig estive aid and colon cleanser.    


While your puppy is growing, you want to be sure to increase the distance you may walk it slowly.  Allowing free play all the time except right after eating is fine, but walking the puppy can be harmful if the distance is not increased slowly.  Giant breed puppies grow rapidly and their bones are soft and take a long time to harden and mature.  I never walked any of my puppy’s a mile until they were 1 year old.  I very slowly worked up to that distance as they grew. 

You also want to be sure that you try to walk them on soil or unpaved paths if at all possible.  Concrete is hard on their joints.  We want those skeletons to grow strong without strain.


For being such a large furry dog, the Pyrenean Mastiff is surprisingly easy to care for.  The key is to get them used to grooming at a young age.  Pyrenean Mastiff de Monte Sano pups are started out with a dremel for their nails at about 3 months of age so that they aren't afraid of the tool.  This may mean simply touching each nail since they might not yet be long enough to really remove the tips.  Grooming is rather easy as long as you brush and comb their fur at least once a week.  Pyrenean Mastiff de Monte Sano dogs are brushed daily, with thorough combing at least monthly, and a bath every one or two months, or on occasion more frequently dependent on the weather and their show schedule