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Boxer

Life expectancy
11.3 years
95% CI 11.3 to 11.5 · McMillan 2024, n=11,294
Highest allele frequency
Degenerative Myelopathy
42% of gene copies · 4,552 dogs tested · Donner 2023
Behind this page
192 dogs
behind the atlas figures · 4,557 tested for variants

Boxers have a cited life expectancy of 11.3 years (McMillan 2024 / VetCompass, n=11,294, 95% CI 11.3 to 11.5). The tested variant with the highest allele frequency is Degenerative Myelopathy, at 42% among the 4,552 Boxers tested (Donner 2023; gene copies, not dogs).

Boxer
Photo: Mood210 · CC BY-SA 3.0 · Wikimedia

Also known as Deutscher Boxer and German Boxer.

See in the atlas → From CanVAS
Mendelian-disease genetics

Which disease variants turn up in Boxers?

From a panel of 250 Mendelian-disease variants screened in 1,054,293 dogs (Donner et al. 2023), 27 turn up in Boxers at observable frequency. The figure beside each is its allele frequency. Of the gene copies tested in this breed, the share that carry the variant. Every dog carries two copies, so this is not the share of dogs. It 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
high frequency band 42.1%
n = 4,552 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.

Cystinuria Type I-A (SLC3A1 p.I192V)
Autosomal recessive
low frequency band 0.48%
n = 4,557 dogs · 3 variants tested · OMIA:000256-9615 · omia.org →
SLC3A1what this gene does

SLC3A1 is a gene that helps transport certain amino acids in the kidneys. It plays a key role in preventing the buildup of cystine, which can form stones.

For your dog: If your dog is from a breed known to carry SLC3A1 variants, it’s worth discussing cystinuria risks with your vet, especially if urinary issues arise.

Hyperuricosuria (HUU)
Autosomal recessive
low frequency band 0.30%
n = 4,557 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.

Cystinuria Type I-B (SLC7A9 p.A217T)
Autosomal dominant (OMIA); Autosomal recessive (Incomplete penetrance) (Donner 2023)
marker disputed 0.27%
n = 4,557 dogs · 2 variants tested · OMIA:001880-9615 · omia.org →
SLC7A9what this gene does

SLC7A9 is a gene that helps transport certain amino acids in the kidneys. It plays a role in how the body handles cystine, an amino acid that can form crystals.

For your dog: If your dog is a carrier, it’s worth discussing with your vet to monitor urinary health and catch any issues early.

Canine Multifocal Retinopathy 1 (CMR1)
Autosomal recessive
low frequency band 0.23%
n = 4,557 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.

MDR1 (Multidrug Resistance 1) Medication Sensitivity
Autosomal incomplete dominant
low frequency band 0.20%
n = 4,557 dogs · 1 variant tested · OMIA:001402-9615 · omia.org →
ABCB1what this gene does

ABCB1 is a gene that helps control how certain drugs are processed and cleared from a dog's body.

For your dog: If your dog is from a breed that carries this gene variant, ask your vet about medication sensitivities before giving any new drugs.

Dilated Cardiomyopathy risk factor (PDK4-related)
Multifactorial (OMIA); Autosomal dominant (Incomplete penetrance) (Donner 2023)
marker disputed 0.18%
n = 4,557 dogs · 2 variants tested · OMIA:000162-9615 · omia.org →
PDK4what this gene does

PDK4 helps regulate how cells use energy, especially in the heart muscle.

For your dog: If your dog is one of the breeds known to carry this gene, it’s worth discussing heart health with your vet, but being a carrier doesn’t mean your dog will develop disease.

Progressive Rod-Cone Degeneration (prcd-PRA)
Autosomal recessive
low frequency band 0.14%
n = 4,548 dogs · 1 variant tested · OMIA:001298-9615 · omia.org →
PRCDwhat this gene does

PRCD is a gene involved in the health of a dog's retina, the part of the eye that detects light and helps with vision.

For your dog: If your dog belongs to a breed known to carry PRCD changes, it's worth discussing eye health and potential genetic testing with your vet.

Chondrodystrophy and Intervertebral Disc Disease Risk (CDDY)
Autosomal dominant
low frequency band <0.1%
n = 4,535 dogs · 1 variant tested · OMIA:000157-9615 · omia.org →
FGF4what this gene does

FGF4 influences leg length by affecting bone growth, leading to shorter legs in certain breeds.

For your dog: If your dog is from a breed known to carry this gene, it's worth discussing spinal health with your vet, but being a carrier doesn’t guarantee problems.

Cone-Rod Dystrophy (cord1-PRA/crd4)
Autosomal recessive
low frequency band <0.1%
n = 4,548 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.

Bleeding disorder (P2RY12-related)
Autosomal recessive
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001564-9615 · omia.org →
P2RY12what this gene does

P2RY12 is a gene that helps control how platelets stick together to form blood clots, which is essential for stopping bleeding.

For your dog: If your dog is from one of these breeds, it’s worth asking your vet about P2RY12 to understand any potential bleeding risks, especially before surgery or injury.

Collie Eye Anomaly (CEA)
Autosomal recessive
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:000218-9615 · omia.org →
NHEJ1what this gene does

NHEJ1 is a gene involved in repairing breaks in DNA, helping maintain the integrity of genetic information in cells.

For your dog: If your dog belongs to one of the breeds known to carry this gene variant, it's worth discussing testing with your vet to understand any potential eye health risks.

Protein Losing Nephropathy (PLN; NPHS1-related)
Autosomal recessive (Incomplete penetrance)
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001326-9615 · omia.org →
NPHS1what this gene does

NPHS1 is a gene important for kidney function, helping to keep proteins in the blood where they belong.

For your dog: If your dog’s breed is on the list, it’s worth asking your vet about NPHS1 to understand any risks and keep an eye on kidney health.

Von Willebrand's Disease, Type 1 (vWD 1)
Autosomal (OMIA); Autosomal recessive (Donner 2023)
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001057-9615 · omia.org →
Exercise-Induced Collapse (EIC)
Autosomal recessive
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001466-9615 · omia.org →
DNM1what this gene does

DNM1 is a gene that helps nerve cells communicate properly by managing how they send signals during muscle activity.

For your dog: If your dog belongs to one of the breeds known to carry this gene variant, it's worth discussing EIC with your vet, especially if your dog is very active or shows signs of weakness during exercise.

Cone-Rod Dystrophy 2 (crd2)
Autosomal recessive
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001675-9615 · omia.org →
Cystinuria Type II-A
Autosomal dominant
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:001879-9615 · omia.org →
SLC3A1what this gene does

SLC3A1 is a gene that helps transport certain amino acids in the kidneys. It plays a key role in preventing the buildup of cystine, which can form stones.

For your dog: If your dog is from a breed known to carry SLC3A1 variants, it’s worth discussing cystinuria risks with your vet, especially if urinary issues arise.

Neuroaxonal Dystrophy (VPS11-related)
Autosomal recessive
low frequency band <0.1%
n = 4,557 dogs · 1 variant tested · OMIA:002152-9615 · omia.org →
Polyneuropathy with Ocular Abnormalities and Neuronal Vacuolation (POANV)
Autosomal recessive
low frequency band <0.1%
n = 4,507 dogs · 1 variant tested · OMIA:001970-9615 · omia.org →
RAB3GAP1what this gene does

RAB3GAP1 is a gene involved in nerve cell function, particularly in how cells communicate and maintain their structure.

For your dog: If your dog is one of the breeds known to carry this gene variant, it's worth discussing genetic testing with your vet to understand any potential risks.

Centronuclear Myopathy (HACD1-related; CNM)
Autosomal recessive
low frequency band <0.1%
n = 4,556 dogs · 1 variant tested · OMIA:001374-9615 · omia.org →
Show the other 7, ordered after these by frequency band, then allele frequency.
Acral Mutilation Syndrome (AMS) <0.1% n = 4,557
Chondrodysplasia, Disproportionate Short-limbed (ITGA10-related) <0.1% n = 4,557
Cone-Rod Dystrophy 1 (crd1) <0.1% n = 4,557
Craniomandibular Osteopathy <0.1% n = 4,557
Ichthyosis (NIPAL4-related) <0.1% n = 4,557
Neuronal Ceroid Lipofuscinosis 4A (NCL4A) <0.1% n = 4,557
Primary Lens Luxation (PLL) <0.1% n = 4,557
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: 4,557 dogs from the Donner 2023 cohort.
In plain terms

What these results mean for a Boxer

Degenerative myelopathy (DM)

About 42 in every 100 copies of this gene in the 4,552 Boxers tested carry this change (Donner 2023).

  • DM slowly damages the spinal cord in adult dogs, until the back legs stop working. Nothing yet can stop it.
    OMIA 000263-9615

    “This is an adult onset degeneration of the spinal cord that progresses to paraplegia and tetraparesis. There is no successful treatment. A genetic test is available.” OMIA 000263-9615

  • Two copies of the SOD1 gene change mean a dog is at risk, not that it will get sick. Some dogs with two copies never do.
    OMIA 000263-9615

    “some homozygous mutant dogs had no signs of degenerative myelopathy, which suggests incomplete penetrance or other causative loci” OMIA 000263-9615

  • One copy makes a dog a carrier. In the study that found this change, every dog with DM that was tested had two copies.
    OMIA 000263-9615

    “All affected dogs tested were homozygous mutant.” OMIA 000263-9615

What to do
A DNA result isn't a diagnosis. If the way your dog walks changes, take that and the result to your vet.

Not tested, or a mix
Without a test, no one can tell how many copies your dog has. How common it is in a breed says nothing about one dog.

Which Mendelian variants matter most for Boxers?

The Mendelian-disease table above lists 194 variants screened in 4,557 Boxers (Donner 2023). A few stand apart by allele frequency and clinical impact.

Hyperuricosuria (HUU)

Hyperuricosuria in Boxers is an autosomal recessive disorder of purine metabolism that predisposes to bladder-stone formation. The variant’s allele frequency among tested Boxers is 0.30% (Donner 2023, n=4,557). How often dogs with two copies form stones has not been measured in Boxers: the Donner cohort followed one such dog (0 of 1 at-risk dogs confirmed), too few to give a rate. Testing exists; with a variant this rare, most Boxer breeders will not rank it first.

What should I feed a Boxer?

Feeding a Boxer well means feeding around the breed’s brachycephalic physiology and a DM variant common enough that many Boxers carry a copy (allele frequency 42.1%, Donner 2023, n=4,552). Boxers cannot thermoregulate through panting as efficiently as long-muzzled breeds, which means meal timing and exercise windows are tied together in ways that don’t apply to most dogs.

Feed around the heat-of-day. Boxers are prone to exercise-induced hyperthermia. Schedule the main meal in the cool part of the day (morning or evening, not midday), and never exercise hard within two hours of feeding. The breed’s respiratory anatomy makes post-meal exertion riskier than it is for other athletic breeds.

Joint and neuromuscular health matter. The 42.1% DM allele frequency (Donner 2023, n=4,552) and the breed’s athletic build make controlled exercise and stable joint support important. A large-breed adult formula with glucosamine and chondroitin is a reasonable addition after age four, though peer-reviewed evidence that supplements help dogs without signs is sparse. Weight management is higher-yield. Weight management is the most consistently recommended modifiable factor for dogs at risk of DM.

Cardiac monitoring is breed-routine. Boxers have a breed-recognized risk of cardiac arrhythmia and structural disease (American Boxer Club health guidelines; OFA cardiac registry). Annual veterinary exams with auscultation are standard. Dietary supplementation with taurine is reasonable though not proven to prevent disease in this breed; most commercial large-breed formulas include adequate taurine (NRC 2006 minimum: 1.0g/1000kcal for adults).

What we don’t know

We do not yet know which Boxers with two copies of the DM variant (allele frequency 42.1%, Donner 2023) become symptomatic and which remain clinically silent. Penetrance is incomplete, but the genetic and environmental factors that tip a carrier into disease are largely uncharted. Age at onset varies widely even among phenotypically confirmed cases.

Environmental and dietary modifiers of DM progression are understudied in Boxers specifically. Published analyses have returned few prevention strategies beyond weight management and avoiding overexertion in middle-aged dogs with two copies.

Frequently asked questions about Boxers

Are Boxers prone to degenerative myelopathy? Yes. The DM variant has an allele frequency of 42.1% among the 4,552 Boxers tested (Donner 2023), the share of tested gene copies, not of dogs. Dogs need two copies to be at risk, and with a figure this high many pairings can produce them, so breeders and owners should know both parents’ status. Not all at-risk dogs become symptomatic.

What is the median lifespan of a Boxer? The atlas-derived median is 11.3 years (McMillan 2024 / VetCompass). Individual dogs vary widely, and proper screening, feeding, and weight management during the middle years (ages 4-10) matter most.

Should I do a DNA test on my Boxer? For breeding stock, yes. The DM test is the highest-yield panel, especially given the 42.1% allele frequency in the breed. If your Boxer might receive off-label doses of ivermectin or chemotherapy, MDR1 testing is also useful.

What is the most common genetic disease in Boxers? Degenerative myelopathy. It is the highest-frequency variant in the breed and the most consequential for breeding decisions and long-term care planning.

Are Boxers good with children? Boxers are energetic and affectionate with family. They were bred as working dogs and retain a strong drive for interaction. Proper socialization and exercise management are essential, especially given the breed’s strength and exuberance.

Can I exercise my Boxer in hot weather? With caution. Boxers have brachycephalic (short-muzzled) anatomy that limits their ability to cool through panting. Avoid strenuous exercise during the heat of the day. Early morning or evening exercise is safer.

What should I feed a Boxer puppy? A large-breed puppy formula with controlled calcium (0.8-1.2% on a dry-matter basis) and a calcium-to-phosphorus ratio between 1.1:1 and 2:1 (NRC 2006). Avoid overfeeding to prevent too-rapid growth, which stresses developing joints.

Is my Boxer at risk for heart disease? Cardiac arrhythmia and structural disease occur in Boxers. Annual veterinary cardiac auscultation is standard. Discuss any symptoms (lethargy, collapse, coughing) with your vet. Screening protocols vary; consult your breed-club health guidelines.

Temperament

What Boxers tend toward

Tendencies from owner surveys of purebred Boxers — a leaning across the breed, not a prediction for any one dog. A bar’s strength shows how much of that behavior breed actually explains: for most it’s faint, because the rest is your dog, their training, and the life you give them.

Proximity Seekingbreed ~13%
affectionatealoof
Dog Sociabilitybreed ~8%
less sociablehighly sociable
Biddabilitybreed ~18%
biddableindependent
Agonistic Thresholdbreed ~9%
assertivediffident
Toy-directed Motor Patternsbreed ~18%
toy-directednot toy-directed
Arousal Levelbreed ~8%
arousedcomposed
Human Sociabilitybreed ~11%
less sociablehighly sociable
Environmental Engagementbreed ~9%
high engagementlow engagement
n = 43 dogs · Morrill et al. 2022, Science, Darwin's Ark (CC0)
Owner-reported purebreds; each factor n ≥ 25. "Breed ~%" is the share of this behavior explained by breed.
Names & origins

Other names

The Boxer is also recorded as Deutscher Boxer and German Boxer.

Identified as Boxer (VBO:0200210) in the Vertebrate Breed Ontology (Mullen et al. 2025, CC-BY 4.0) · registry IDs FCI 144 · iDog 48 · VeNom 13724.

For researchers Population genetics, disease models and every recorded condition Open the research detail for the Boxer
What the atlas says about Boxer

In the atlas, the Boxer clusters consistently as Boxer (100% of the 192 dogs here).

High breed predictability score (4.38): individual dogs of this breed reliably cluster together genetically.

Genetic dimensions · CanVAS atlas

What the atlas genotypes say about Boxer

Computed from the 14,478 CanVAS dogs in the Atlas, on an imputed genotype backbone: 77,215 directly typed sites per dog, imputed to 9.67 million variants.

The confidence below counts dogs, not reads: it is the size of the sample, and it is separate from how the genotypes were measured.

Dogs behind these figures
192Founders
152 from Hayward2016, 15 from Momozawa, 14 from Shannon
Genetic diversity
0.25Tight
Mean heterozygosity across the breed. 15th tightest of 107 ranked populations (13th to 18th when its dogs are resampled).
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
Splits into two genetic sub-populations
Intra-breed RMS distance: 23.06 · likely working/show-line, regional, or kennel lineage split.
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
Built from
Distant kin · one shared founding ancestor
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
11.3years (life expectancy)
95% CI 11.3–11.5 · VetCompass, McMillan 2024, n=11,294. 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.

n = 192 dogs · high sample · CanVAS (Brundage 2026) · Sniff Atlas
A gift to human medicine

Boxers are a natural model for human disease

Because the same genes cause the same conditions across species, the inherited conditions documented in Boxers 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. The named gene is the canine locus, not a claim that a pet has the human disease.
Documented in OMIA

Every condition recorded in the Boxer

Beyond the testable carriers above, OMIA's literature catalogue records 23 genetic conditions in the Boxer, 15 of which have a known human equivalent. This is the documented landscape across all Boxers ever studied, not a prediction for any one dog.

Plus 5 more conditions recorded in the Boxer in OMIA.

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. Allele 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. Allele 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 in the structured data for every variant the panel covers. Mondo, OMIM, Ensembl, and HGNC cross-references live on the gene and disease pages this page links to, rather than being repeated here. What is still absent from this breed page is anything not in the cited panel, and each such gap carries its cause where it appears.

How to cite this page. The computed dimensions on this page are derived from the open Sniff Atlas v1.0.2 (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 DM (2026). CanVAS: A Harmonized and Imputed 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