Feeding Your Lagotto — Nutrition, Growth & What the Science Actually Shows

What We Feed and Why

Every puppy that leaves Northwest Lagotto goes home eating Royal Canin Medium Puppy. That is not a sponsorship. It is a decision I made on my veterinarian’s recommendation eleven years ago and have not had a reason to change.

Royal Canin is one of the oldest pet nutrition companies in the world. They conduct ongoing research. Their product line supports breeders specifically — from D42 prenatal food through mother-and-puppy starter food to size-specific puppy formulas — which means the nutritional profile is calibrated to each stage of development rather than offering a single “puppy food” and hoping it covers everything.

Other brands claim to be better. Some may be. But what I can tell you after eleven years and more litters than I can count is that Royal Canin has been reliable and dependable for me. The puppies grow well on it. The body condition is consistently where it should be. The stools are firm. The coats are healthy. When something works, I do not chase novelty.

There are good foods beyond Royal Canin. What matters more than the brand is that whatever you feed meets three non-negotiable criteria: it carries an AAFCO “Growth” statement, it has a correct calcium-to-phosphorus ratio (1.1:1 to 1.4:1), and it is grain-inclusive unless your veterinarian specifically directs otherwise.

The Calcium Rule: The Most Important Thing in This Essay

This is the single most important nutritional fact for growing puppies, and it is the one most commonly violated by well-meaning owners who add calcium supplements, bone meal, cottage cheese, or raw bones to an already complete diet thinking they are helping their puppy’s bones grow stronger.

They are doing the opposite.

A complete and balanced puppy food already contains the correct calcium-to-phosphorus ratio — typically 1.2–1.8% calcium on a dry matter basis, with a Ca:P ratio between 1.1:1 and 1.4:1. Adding calcium on top of this disrupts the ratio and overwhelms a system that has no mechanism to protect itself. The research from the National Academies, Royal Canin, and the Purina Institute is unambiguous on this point.

If someone tells you to add calcium to your puppy’s diet, politely decline. If a website recommends it, close the tab. This is one area where the science is settled and the consequences of getting it wrong are permanent.

Lean Is Healthy: Body Condition Scoring

Body condition scoring is a standardised assessment of body fat relative to muscle and bone. The 9-point scale is the standard used by veterinarians worldwide. Your Lagotto should live between a 4 and a 5 — what the scale calls “ideal.”

How to Assess

From above: you should see a defined waist — the body should narrow behind the ribcage. From the side: you should see an abdominal tuck — the belly rises up behind the ribs rather than hanging level or sagging. By touch: run your hands along the ribcage. You should feel the ribs easily without pressing hard, but they should not be prominently visible.

Check your puppy every two to four weeks during rapid growth. Check your adult dog every three to six months. Research shows that body condition at seven months predicts adult weight — a puppy that is overweight at seven months is significantly more likely to be overweight at two years. Early habits persist.

The most common feedback I get from families is that they think the puppy looks too thin. Visitors comment. Neighbours comment. If you can feel the ribs easily and see a waist, the puppy is not too thin. It is exactly where it should be. Trust the science on this one — the Purina study is as close to definitive as nutritional research gets.

Feeding Schedules and Portions

Measured meals, not free-feeding. This is non-negotiable. Research confirms that dogs eat substantially more when food is available ad libitum, and with 56% of dogs in the United States classified as overweight or obese, portion control is one of the simplest interventions available.

Measured meals also let you notice appetite changes — one of the earliest signs of illness in any dog. A dog that skips a measured meal tells you something. A dog that grazes from a bowl all day tells you nothing until the problem is advanced.

How much? Follow the guide on the bag as a starting point, then adjust based on what you see and feel — not based on what the bag says, not based on what a formula prescribes, and not based on how enthusiastically the puppy eats. A Lagotto will eat with enthusiasm at every meal regardless of whether it needs the food. Your hands on the ribs are a more reliable feeding guide than any chart.

Feeding as a Mind Game

A Lagotto that eats from a bowl twice a day is missing an opportunity. This is a breed with 300 million scent receptors, a truffle-hunting heritage, and a brain that needs work. Feeding is not just nutrition — it is an opportunity to stimulate the dog.

Every meal that comes from a puzzle rather than a bowl is a meal that did double duty — nourishment and enrichment. For a breed that will find its own entertainment if you do not provide it, this is an investment that pays behavioural dividends immediately.

Joint Supplements: What the Evidence Actually Supports

The joint supplement market is enormous, confusing, and largely unregulated. Most products are recommended based on tradition rather than evidence. Here is what the clinical research actually shows — ranked by strength of evidence, not by popularity.

I recommend omega-3 and green-lipped mussel as joint support for every Lagotto. These are the supplements with the strongest evidence behind them, they are safe to start early, and they provide benefits beyond joint health. Discuss specific products and dosing with your veterinarian.

The Raw Feeding Question

Families ask about raw feeding regularly. I do not discourage it — but I do have an honest conversation about what the evidence shows.

The benefits are largely anecdotal. Some owners report improvements in coat quality, stool consistency, and weight management. These may be real, but they may also be attributable to higher fat content rather than raw feeding specifically.

The risks are well-documented. FDA testing found that approximately one in three frozen raw meat diets contain Salmonella, Listeria, or toxigenic E. coli. A study evaluating five raw diets — three homemade, two commercial — found that all five had nutritional deficiencies or excesses that would cause serious health problems long-term. A 2022 study found nutritional deficiencies in over 90% of raw meat-based diets examined.

Every major veterinary organisation — the CVMA, AVMA, WSAVA, and AAHA — has issued position statements discouraging raw meat-based diets.

Grain-Free and DCM

This debate is not settled, but the evidence is concerning enough to warrant caution.

Increasing numbers of dogs have developed dilated cardiomyopathy (DCM) while eating grain-free diets rich in legumes — peas, lentils, chickpeas. The connection appears strongest with legumes as primary ingredients, not simply the absence of grains. Many affected dogs improved after switching to traditional grain-inclusive diets, suggesting the condition may be reversible when caught early.

The current understanding is that DCM in these cases is multifactorial, involving genetics, protein source quality, and amino acid availability — particularly taurine and carnitine.

Treats That Earn Their Place

Training treats should be small, single-purpose, and not complicate the nutritional picture. Here is what I recommend:

Freeze-dried liver treats. Single ingredient. No preservatives. High value for training. Break into small pieces — the dog does not need a large treat to register the reward.

Bully sticks. Single ingredient, no preservatives, and a genuine chewing project. These satisfy the chew drive without the splintering risk of cooked bones.

Yak cheese chews. Single ingredient, extraordinarily durable, and when the last piece gets too small to chew safely, you can microwave it for fifteen seconds to create a crunchy puff. These are particularly valuable during teething — they give the puppy something productive to work on when the urge to chew is at its peak.

What to avoid: treats with long ingredient lists, anything containing xylitol (check peanut butter labels), rawhide (choking and obstruction risk), and cooked bones (splintering risk). Table scraps disrupt carefully balanced nutrition and teach begging — two problems that are easier to prevent than to fix.

Nine Rules for Feeding Your Lagotto

1. Never supplement calcium. Your puppy’s food already has what it needs. Extra calcium causes irreversible skeletal damage in growing puppies.
2. Lean is healthy. You should feel ribs easily. A lean puppy lives longer, has healthier joints, and avoids the number one preventable health problem in dogs.
3. Measure every meal. Free-feeding leads to obesity in most dogs. Two measured meals daily is the standard.
4. Avoid grain-free unless your vet specifically recommends it. The link to heart disease is concerning enough to warrant caution.
5. Transition food gradually. Two weeks, mixing increasing proportions of new food. Sudden changes cause digestive upset and disrupt the gut microbiome.
6. Omega-3s are the best-supported supplement. Marine-source fish oil benefits joints, skin, coat, brain, and heart.
7. For joints, GLM and UC-II outperform glucosamine. Despite glucosamine’s popularity, green-lipped mussel and undenatured type II collagen have stronger clinical evidence.
8. No table scraps. Beyond the toxic food risks, human food disrupts carefully balanced nutrition and teaches begging.
9. Your dog’s body condition at seven months predicts adult weight. Early habits matter. Start right and stay consistent.