Breeding suitability guide — Mastiff
For breeders: which tests, which thresholds, which mating rules apply
1. Mandatory tests for parents
These tests must be on file for every breeding animal.
| Test / condition | Scoring scheme | Approved from | Inheritance | Source |
|---|---|---|---|---|
| Elbow Dysplasia (ED) | X-ray | ED 0–1 | Polygenic | Legacy |
| Hip dysplasia (HD) | X-ray | HD A–B | Polygenic | CIDD |
| Pulmonary stenosis (PS) | — | normal | Complex | CIDD |
2. Mating rules
When one parent has a borderline result, the other parent must meet specific criteria.
Elbow Dysplasia (ED)
Polygenisch — beide Elterntiere sollten das Ergebnis „ED 0–1“ erreichen. Tiere aus belasteten Linien sollten nicht für die Zucht eingesetzt werden.
Legacy3. Recommended additional tests
Sensible additions for line planning.
| Test / condition | Scoring scheme | Approved from | Inheritance | Source |
|---|---|---|---|---|
| Ectropion / Entropion | — | clear | Complex | CIDD |
| Exposure keratopathy syndrome (exophthalmos, lagophthalmos, and/or macroblepharon) (EKS) | Eye examination | clear | Complex | CIDD |
| Cataract (HC) | Eye examination | clear | Complex | CIDD |
| Persistent pupillary membranes (PPM) (PPM) | Eye examination | clear | Unknown | CIDD |
| Progressive Retinal Atrophy (PRA) (PRA) | — | clear | Autosomal recessive | CIDD |
| Retinal Dysplasia (RD) | Eye examination | clear | Complex | CIDD |
| Cystinuria (Cyst-1a) | Body-fluid analysis | clear or carrier | Autosomal recessive | AI-Vet |
4. HonestDog verification
- Upload a legible certificate (PDF or photo) per test in the breeder dashboard
- Certificate must show date, examining vet, and FCI/VDH logo
- Certificates older than 36 months are flagged as stale
- We extract the results from each upload using AI and check them for consistency with the dog's profile — the profile tile then shows 'verified'