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Cane Corso

Cane Corso
Photo: Claudio Domiziani / CC BY-SA 2.5 · Wikimedia

18 Cane Corsos in the atlas. Every number on this page has a source.

Population-genetic snapshot of Cane Corsos in the Sniff Atlas, source-graded Mendelian carrier frequencies from Donner 2023, and nutrition guidance tied to the genetic findings above.

Also known as Cane Corso Italiano, Italian Corso, Italian Corso Dog, and Italian Mastiff.

The plain version

The Cane Corso has a surprisingly varied genetic background compared to many other breeds, which is a good thing for their overall health. They are related to big, strong dogs like the Neapolitan Mastiff and Saint Bernard. Since only a small number of Cane Corsos were studied, this picture might change as more dogs are tested. No specific inherited health concerns were found in this group, but it’s always a good idea to chat with your vet or consider genetic testing for your own dog.

What the atlas says about Cane Corso

In the atlas, the Cane Corso clusters consistently as Cane Corso (100% of the 18 dogs here). Genetic diversity is high (mean heterozygosity 0.3567), reflecting either a mixed-breed cluster or breeds with broad genetic backgrounds. At the trait loci, LCORL runs lower than average (25% here vs 83%); KRT71 runs lower than average (56% here vs 91%).

Mean heterozygosity is 0.357, notably high, indicates broad genetic background. Only 18 dogs of this breed in the atlas, modestly sampled.

Genetic dimensions · CanVAS atlas

What the genome says about Cane Corso

Computed from the 18,477 research dogs in the Atlas.

These figures are computed from only 18 Cane Corsos in the atlas. Treat them as provisional. They sharpen as more dogs are added.
Dogs in the Atlas
18Founders
9 from Hayward2016, 5 from Parker, 4 from Spatola
Genetic diversity

Not enough dogs in the atlas yet (n=18) for a reliable diversity figure. It fills in as more are added.

Mean heterozygosity across the breed. Too few dogs in this breed (<20) to rank.
What does genetic diversity mean?

How varied a breed's gene pool is — the share of gene spots where a typical dog of the breed carries two different versions rather than two identical ones.

How to read it: Higher = more diverse. Among well-sampled breeds it ranges roughly 0.22 (least diverse) to 0.33 (most diverse).

Diversity is a strength, not a verdict on any individual dog. Lower diversity means it's worth paying attention to recessive-risk testing — not that a dog is doomed.

Cluster structure

Not enough dogs in the atlas yet (n=18) to resolve cluster structure. It fills in as more are added.

What does within-breed variation mean?

How much individual dogs within the breed differ from each other genetically.

How to read it: Higher = more internal variety among individuals of the breed.

Sensitive to how many dogs of the breed we've sampled.

Related breeds
In the Working group
Explore the full lineage map →
VBO foundation stock (breeding records) · AKC breed group
Relatedness is documented lineage + kennel family. Genetic-ancestry distance measures diversity, not kinship, so it isn't used here.
How long they live
8.1years (life expectancy)
95% CI 6.5–9.5 · VetCompass, McMillan 2024, n=202. source
What does typical lifespan mean?

The median age dogs of the breed tend to reach.

How to read it: Higher = longer-lived. Compare to longevity-for-size to see whether it's just a size effect.

Drawn from population lifespan records; individual dogs vary widely with care, genetics, and luck.

Trait genetics
Allele frequencies at named morphology loci

Frequency of the alternate allele in this breed at each locus's representative SNP.

Not enough Cane Corsos in the atlas yet (n=18) for reliable allele frequencies at these loci. It fills in as more are added.

n = 18 dogs · low confidence · CanVAS (Brundage 2026) · Sniff Atlas
Names & origins

Other names

The Cane Corso is also recorded as Cane Corso Italiano, Italian Corso, Italian Corso Dog, and Italian Mastiff.

Identified as Cane Corso (VBO:0200712) in the Vertebrate Breed Ontology (Mullen et al. 2025, CC-BY 4.0) · registry IDs FCI 343 · iDog 62.

What you see when you look at a Cane Corso

What does the genome say about how a Cane Corso looks?

Cane Corsos look the way they do because of a small set of fixed and near-fixed morphology genes that, taken together, define the visible breed. Each translation below pairs the gene with the trait an owner actually sees, the breed's allele frequency at that locus, and a one-clause causal phrase.

Where the breed-defining genes act, mapped on a generic dog-body key — and how fixed each marker is in the Cane Corso. The figure is the most-settled marker we read in that region; the full per-locus panel is below. (The silhouette is a shared anatomical guide, not this breed's outline.)

Body sizeSMAD2 · 83%Skull shapeBMP3 · 82%EarsMSRB3 · 96%Leg lengthFGF4 CFA12 · 100%Coat & colorRSPO2 · 61%
CanVAS trait-locus panel (Brundage 2026)
15 morphology markers read across 5 regions. Allele frequency = how fixed a marker is in this breed, not whether your dog carries it.

Size and build

IGF1 sits at 36% for the small-body allele. IGF1 is the gene that sets dog body size from Chihuahua to Great Dane. Intermediate frequencies typically keep a breed in the mid-sized range rather than tipping toward the larger working forms.

IGF1what this gene does

IGF1 is a gene that plays a key role in determining a dog's body size. It influences how much a dog grows, affecting overall stature.

For your dog: Knowing about IGF1 gives you insight into your dog's size traits, but it’s just one part of the bigger picture when it comes to their health and care.

Full IGF1 gene page →

HMGA2 sits at 56%. HMGA2 is a chromosome-10 size locus that acts together with IGF1, and intermediate frequencies reflect partial commitment to the dominant size variant.

HMGA2what this gene does

HMGA2 is a gene that influences body size in dogs, helping determine how big or small a dog grows.

For your dog: Knowing about HMGA2 helps you appreciate the genetic factors behind your dog's size, but it doesn't signal any health issues.

Full HMGA2 gene page →

SMAD2 sits at 83% at the chromosome-7 height locus.

SMAD2what this gene does

SMAD2 is a gene involved in regulating body size by influencing how cells grow and develop.

For your dog: Knowing about SMAD2 helps understand your dog's size traits but isn't linked to health issues; no immediate action needed.

Full SMAD2 gene page →

LCORL is at 25%, the NCAPG/LCORL height locus running against the breed's body-size profile here.

LCORLwhat this gene does

LCORL is a gene that influences body size in dogs. It helps determine how big or small a dog might grow.

For your dog: Knowing about LCORL helps you appreciate the genetic factors behind your dog's size, but it’s just one piece of the bigger picture when it comes to health and care.

Full LCORL gene page →

STC2 sits at 67%.

ADAMTS17 sits at 53%. ADAMTS17 is a body-size locus also linked to lens disorders.

ADAMTS17what this gene does

ADAMTS17 is a gene that influences body size and also plays a role in certain eye conditions. It affects the structure of tissues in the eye and elsewhere in the body.

For your dog: If your dog belongs to a breed known to carry ADAMTS17 variants, it’s worth discussing genetic testing and eye exams with your vet to stay ahead of potential issues.

Full ADAMTS17 gene page →

Leg length

The FGF4 retrogene on chromosome 18 is near-fixed in this breed at 94%. This is the leg-length variant. The breed is fully committed to the long-legged form rather than the short-legged Corgi-and-Dachshund body plan.

The FGF4 retrogene on chromosome 12 is near-fixed at 100%, the chondrodystrophic variant associated with intervertebral disc disease risk in breeds that carry it.

Coat type, length, and color

RSPO2 sits at 61% for the furnishings variant. Furnishings (the eyebrow-and-mustache pattern seen in Schnauzers and Wheaten Terriers) vary across the population at this intermediate frequency, and visible expression depends on the specific allele combination each dog carries.

RSPO2what this gene does

RSPO2 influences the texture and appearance of a dog's coat, particularly the presence of 'furnishings' like mustaches and eyebrows. It helps determine whether a dog has that distinctive wiry or textured look.

For your dog: If your dog has those wiry eyebrows or a mustache, RSPO2 is part of the reason—no health worries, just a coat feature worth knowing about.

Full RSPO2 gene page →

FGF5 sits at 44% for the long-coat variant. Coat length is influenced by other loci as well, so intermediate FGF5 frequencies do not always correspond to intermediate visible coat lengths.

FGF5what this gene does

FGF5 is a gene that influences the length of a dog's coat. It acts like a natural switch, telling hair follicles when to stop growing longer fur.

For your dog: If your dog has a notably long or short coat, FGF5 is likely part of the reason—no action needed, but it’s a neat genetic detail to know.

Full FGF5 gene page →

KRT71 sits at 56% for the wavy/curly variant. Coat curl varies across individuals at this intermediate frequency, and visible expression is also influenced by modifier loci.

KRT71what this gene does

KRT71 is a gene that influences the curliness of a dog's coat. It helps determine whether a dog's fur is straight or has a distinctive curl.

For your dog: If your dog has a curly coat, KRT71 is likely part of the reason; it’s a natural variation, not a health concern.

Full KRT71 gene page →

MC1R sits at 56% at the representative SNP. MC1R controls the switch between red-to-gold pigment and black-to-brown pigment, with the e/e homozygous genotype producing the gold-to-red spectrum. Substrate frequencies at this SNP depend on the array's polarity, so visible coat color in the breed is a more reliable indicator than this single number.

MC1Rwhat this gene does

MC1R is a gene that influences coat color in dogs, affecting how pigments are produced in the fur.

For your dog: Knowing about MC1R gives insight into your dog's coat color but doesn't relate to health issues.

Full MC1R gene page →

Ears

MSRB3 is at 96% for the drop-ear allele, the genetic basis of the breed's signature dropped ear set.

MSRB3what this gene does

MSRB3 is a gene involved in the development of ear shape and structure in dogs.

For your dog: Understanding MSRB3 helps explain why your dog's ears look the way they do, but it isn't linked to any health issues.

Full MSRB3 gene page →

Skull shape

BMP3 sits at 82%, contributing to the breed's moderate, mesaticephalic head shape rather than the extreme brachycephalic form.

BMP3what this gene does

BMP3 is a gene that influences the shape of a dog's skull, particularly contributing to a shorter, broader head shape known as brachycephaly.

For your dog: If your dog has a broad, short skull, it's worth discussing with your vet how this might impact their health, even though BMP3 isn't directly tied to illness.

Full BMP3 gene page →

SMOC2 sits at 58%, contributing to the breed's moderate head shape.

SMOC2what this gene does

SMOC2 influences the shape of a dog's skull, particularly affecting how flat or short the face appears.

For your dog: If your dog has a short nose, it's worth discussing with your vet how this trait might impact their health over time.

Full SMOC2 gene page →
Mendelian-disease genetics

What genetic diseases do Cane Corsos carry?

From a panel of 250 Mendelian-disease variants screened in 1,054,293 dogs (Donner et al. 2023), Cane Corsos carry 4 of them at observable frequency. Carrier frequency is not clinical risk. Most recessive variants require two copies for disease expression; many dominant variants show incomplete penetrance. Read this as a population fingerprint of what's in the gene pool, not a per-dog prediction.

Degenerative Myelopathy (DM)
Autosomal recessive (Incomplete penetrance)
low 2.1%
n = 145 dogs · 1 variant tested · OMIA:000263-9615 · omia.org →
SOD1what this gene does

SOD1 is a gene that helps protect cells from damage caused by harmful molecules called free radicals.

For your dog: If your dog is a carrier of SOD1 variants, it's worth discussing with your vet, but remember carrier status doesn't mean your dog will get the disease.

n = 145 dogs · 1 variant tested · OMIA:001444-9615 · omia.org →
BEST1what this gene does

BEST1 is a gene that helps maintain the health of the retina, the light-sensitive layer at the back of the eye. It plays a role in keeping the cells in the retina functioning properly.

For your dog: If your dog is from a breed known to carry BEST1 variants, it’s worth discussing retinal health with your vet, especially if you notice any vision changes.

Hyperuricosuria (HUU)
Autosomal recessive
low 0.69%
n = 145 dogs · 1 variant tested · OMIA:001033-9615 · omia.org →
SLC2A9what this gene does

SLC2A9 is a gene that helps regulate uric acid levels in a dog's body. It plays a role in how the kidneys handle this substance.

For your dog: If your dog is one of the breeds known to carry this gene variant, it’s worth discussing with your vet to understand any potential urinary health concerns.

Cone-Rod Dystrophy (cord1-PRA/crd4)
Autosomal recessive (Incomplete penetrance)
low 0.34%
n = 145 dogs · 1 variant tested · OMIA:001432-9615 · omia.org →
RPGRIP1what this gene does

RPGRIP1 is a gene involved in the function of photoreceptor cells in the eye, which help dogs see in different light conditions.

For your dog: If your dog belongs to a breed known to carry RPGRIP1 mutations, it’s worth discussing with your vet to understand the risks and monitor eye health.

Source: Donner J et al. 2023. Genetic prevalence and clinical relevance of canine Mendelian disease variants in over one million dogs. PLOS Genetics 19(2):e1010651 · Evidence: Limited (DTC ascertainment, tag-SNP proxy) · Confounding MEDIUM · License CC-BY-4.0 · Phene IDs from OMIA (Sydney School of Veterinary Science, The University of Sydney; DOI 10.25910/2AMR-PV70).
Sample size in this breed: 145 dogs from the Donner 2023 cohort.

Which Mendelian variants matter most for Cane Corsos?

The Mendelian-disease table above lists variants screened in 145 Cane Corsos (Donner 2023). Four variants appear in the breed. All four appear at low carrier frequencies in the tested cohort. The honest summary is that Cane Corsos currently show fewer high-impact Mendelian variants than most large breeds in the testing cohort.

Degenerative Myelopathy (DM)

Degenerative myelopathy in Cane Corsos is an autosomal-recessive spinal-cord degeneration with incomplete penetrance. The disease causes progressive hind-limb weakness and eventual paralysis, typically emerging in middle age or later. About 2.1% of Cane Corsos in the Donner cohort carry one copy of the variant (n=145). Testing exists and is widely available through commercial labs and the Orthopedic Foundation for Animals.

The incomplete penetrance is important. Not every dog with two copies will develop clinical signs. Cane Corso breeders can use carrier status as one data point in pairing decisions, but a carrier dog may never become symptomatic.

Canine Multifocal Retinopathy 1 (CMR1)

Canine Multifocal Retinopathy 1 in Cane Corsos is an autosomal-recessive retinal condition discovered in Mastiff-related breeds. The disease causes multiple focal retinal lesions; most affected dogs retain functional vision, though lesion severity varies. Carrier frequency in the tested cohort was 1.4% (n=145). No phenotype-confirmed affected dogs appeared in the Donner S4 dataset (0/1 at-risk dogs), which suggests either very low penetrance or limited expression in this breed. Testing is available.

Hyperuricosuria (HUU)

Hyperuricosuria in Cane Corsos is an autosomal-recessive disorder of purine metabolism. Affected dogs excrete excess uric acid in urine and are predisposed to urate-stone formation in the bladder or kidneys. Carrier frequency in Cane Corsos is 0.69% (n=145). No phenotype-confirmed affected dogs appeared in the Donner cohort, and the condition is manageable with diet and monitoring when it does occur. Testing is available.

Cone-Rod Dystrophy (cord1-PRA/crd4)

Cone-rod dystrophy in Cane Corsos is an autosomal-recessive retinal dystrophy with incomplete penetrance. The disease affects cone and rod photoreceptors and can lead to progressive vision loss. Carrier frequency is 0.34% (n=145). Testing exists through commercial panels and breed-specific labs.

How should I test my Cane Corso?

The testing landscape for Cane Corsos is thinner than for more numerically dominant giant breeds. A panel covering DM, CMR1, HUU, and cord1-PRA captures the variants currently known in the breed. Work with your veterinarian and the American Cane Corso Association or breed-club health committee to confirm which panel best fits your breeding or selection goals.

What should I feed a Cane Corso?

Cane Corsos go from roughly 1 pound at birth to 100 to 130 pounds at adulthood. The growth rate is so fast that the calcium-to-phosphorus ratio in the puppy formula is the single most important food decision an owner makes. This matters more than breed-specific genetic disease because skeletal deformities from overfeeding calcium during growth can be permanent.

Puppy feeding for giant breeds is not a guessing game. The National Research Council recommends a calcium-to-phosphorus ratio between 1.1:1 and 2:1 for large-breed puppies, with absolute calcium levels kept between 0.8% and 1.6% on a dry-matter basis (NRC 2006). Cane Corso puppies fed excess calcium develop abnormal bone development, including osteochondrosis and angular-limb deformities (NRC 2006). A commercial large-breed puppy formula or a home-prepared diet balanced by a veterinary nutritionist is the responsible path. Avoid oversupplements and calcium-heavy treats during the growth phase.

Adult maintenance shifts to joint support and weight management. The breed’s low Mendelian-disease burden means the feeding priority for adults is preventing obesity and supporting joint longevity. Cane Corsos are mastiff-type dogs; activity levels vary by individual, but the breed is not classified as high-energy. A maintenance kibble formulated for large-breed adults, portioned to keep the dog lean (ribs visible, spine palpable but not prominent), is appropriate. The breed’s nearest genetic relatives (Neapolitan Mastiff, Mastiff) all benefit from controlled weight into old age.

Breed-specific cardiac screening is recommended before major diet changes. While the Mendelian cardiac-risk variants in this page do not include dilated cardiomyopathy risk, the breed’s size and mastiff heritage mean many individual dogs carry breed-typical cardiac risks. An echocardiogram or veterinary cardiac assessment before committing to grain-free or other restrictive diets is prudent. The FDA’s taurine-related DCM signal (2018 advisory, Adin et al. 2019) does not specifically flag Cane Corsos, but the breed’s size and unknown individual cardiac status make the conservative default a grain-inclusive, taurine-verified formulation.

What we don’t know

The Cane Corso’s small testing cohort (n=145) is the dominant limitation. Variants detected in other mastiff-type breeds may exist in Cane Corsos at lower frequencies than the current panel can detect. The substrate facts do not tell us about polygenic hip dysplasia heritability, elbow dysplasia prevalence, or the true carrier frequency of DM or other variants in the unscreened majority of the breed. The Orthopedic Foundation for Animals maintains health statistics by breed, but the Cane Corso’s sample size on OFA is modest compared to larger-registry breeds.

Cancer rates in Cane Corsos are not well-characterized in the published literature. Large and giant breeds carry elevated cancer burden, but the breed-specific epidemiology is not settled.

The breed’s founder cohort is small (Hayward2016=9, Parker=5, Spatola=4). This concentration of genetics may mean unmapped variants run at higher frequency than the current test panel can detect. Expanding the tested cohort would clarify the breed’s true Mendelian-disease burden.

Frequently asked questions about Cane Corsos

Are Cane Corsos healthy? Cane Corsos show lower Mendelian-disease burden than many large breeds in the current testing cohort. The dominant health priorities are skeletal development during growth, joint longevity, and cardiac screening. The breed’s small testing sample (n=145) means less common variants may not yet be characterized.

What is the most common genetic disease in Cane Corsos? Degenerative Myelopathy (DM) has the highest carrier frequency at 2.1% (Donner 2023, n=145). Because inheritance is autosomal recessive with incomplete penetrance, only dogs inheriting two copies are at risk, and not all of those will develop clinical signs. The other three variants (CMR1, HUU, cord1-PRA) are rare.

Should I do a DNA test on my Cane Corso? For breeding stock, testing for DM is recommended. A panel covering the four variants listed above captures the known Mendelian disease burden. Work with your breed club to determine which lab and panel best serves your breeding goals.

How large do Cane Corsos grow? Adult Cane Corsos typically weigh 100 to 130 pounds and stand 23.5 to 27.5 inches at the shoulder (AKC breed standard). The rapid growth from birth to adulthood (roughly 1 pound to 100+ pounds) means controlled puppy nutrition is critical.

What is the best diet for a Cane Corso puppy? A large-breed puppy formula with a calcium-to-phosphorus ratio between 1.1:1 and 2:1, absolute calcium between 0.8% and 1.6% dry matter (NRC 2006). Oversupplenting calcium or feeding adult formulas during the growth phase causes permanent skeletal damage. A veterinary nutritionist can balance a home-prepared diet if that is your preference.

Are Cane Corsos good family dogs? Cane Corsos are loyal, confident dogs bred as guardians. They require early socialization, consistent training, and an owner who understands the breed’s protective temperament. They are not a breed for first-time dog owners.

How long do Cane Corsos live? The breed’s median lifespan is not well-characterized in the published literature. Large and giant breeds typically live 8 to 12 years, though breed-specific data for Cane Corsos remain limited in the published literature. Individual longevity depends on health screening, weight management, and early detection of age-related conditions.

Can Cane Corsos tolerate heat? Cane Corsos are large, heavy-boned dogs; size alone increases heat load, and owners should limit strenuous activity in warm weather. Their size and modest exercise needs mean they should avoid strenuous activity during warm weather. Access to shade, fresh water, and cool rest areas is essential year-round.

A gift to human medicine

Cane Corsos are a natural model for human disease

Because the same genes cause the same conditions across species, the inherited conditions documented in Cane Corsos help researchers understand, and work toward treating, the human diseases they model. This is the dog advancing human medicine. The breed models the human disease; it does not have it, and this is not a prediction for your dog.

Human equivalents via OMIA → Mondo / OMIM. Model-of, not identity.
Documented in OMIA

Every condition recorded in the Cane Corso

Beyond the testable carriers above, OMIA's literature catalogue records 5 genetic conditions in the Cane Corso, 3 of which have a known human equivalent. This is the documented landscape across all Cane Corsos ever studied, not a prediction for any one dog.

Online Mendelian Inheritance in Animals (OMIA); Nicholas, Tammen & Sydney Informatics Hub, DOI 10.25910/2AMR-PV70
Documented in the breed's literature is not carrier status and not a forecast for an individual dog. Human equivalents are mapped via Mondo/OMIM. Carrier frequencies (above) are the separately-measured testable subset (Donner 2023).
The data behind this page

Where every number on this page came from.

This page draws on three primary data sources. Carrier frequencies for the Mendelian section come from Donner et al. 2023 (CC-BY-4.0). We grade these data at evidence Limited because the cohort is a direct-to-consumer ascertainment, which biases toward owners who chose to test their dogs. The panel also uses tag-SNP proxies for some variants rather than direct causal-variant assays. Limited is a study-design grade, not a quality grade: the Donner cohort is the largest open canine-genotype dataset in existence and we are grateful for it. We rate the confounding MEDIUM.

Population-genetic dimensions (heterozygosity, intra-breed PCA distance, nearest neighbors, trait-locus frequencies) come from CanVAS (Brundage 2026), harmonized through the Sniff Atlas. The exact release date and verification commit are pinned at the bottom of the page so a researcher can trace a number back to a specific snapshot. The disease-gene-variant graph comes from OMIA (Online Mendelian Inheritance in Animals; Nicholas, Tammen, and the Sydney Informatics Hub at the Sydney School of Veterinary Science, The University of Sydney; retrieved April 2026, DOI 10.25910/2AMR-PV70).

What this page does not yet have. Inheritance modes and per-disease penetrance evidence from Donner 2023 are now in the structured data for every variant the panel covers. Mondo, OMIM, Ensembl, and HGNC cross-references on gene pages remain pending, they arrive in December 2026 alongside the imputed 9.67M-variant CanVAS dataset via the OMIA SQL dump absorption. Until then, gene IDs carry NCBI Gene and OMIA phene URLs only; the wider human-homolog and disease-ontology cross-reference set fills in with that release.

How to cite this page. The computed dimensions on this page are derived from the open Sniff Atlas v1.0.1 (Gehring 2026, doi:10.5281/zenodo.20566358, CC-BY 4.0). Full citation formats including BibTeX, RIS, and CITATION.cff at sniff.world/cite.

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References
  1. Donner J, Freyer J, Davison S, Anderson H, Blades M, Honkanen L, et al. (2023). Genetic prevalence and clinical relevance of canine Mendelian disease variants in over one million dogs. PLOS Genetics 19(2):e1010651. doi:10.1371/journal.pgen.1010651
  2. Brundage J, et al. (2026). CanVAS: a harmonized canine variant atlas. bioRxiv. doi:10.64898/2026.04.13.718238
  3. Nicholas, F.W., Tammen, I., & Sydney Informatics Hub. (2026). Online Mendelian Inheritance in Animals (OMIA) [dataset]. The University of Sydney. https://omia.org. doi:10.25910/2AMR-PV70 (retrieved April 2026).
Last updated
Sources: CanVAS (Brundage 2026) · Donner 2023 · OMIA