Breeding suitability guide — Chihuahua
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 |
|---|---|---|---|---|
| Patellar Luxation (PL) | Physisch | Grad 0 | Polygenic | CIDD |
2. Mating rules
When one parent has a borderline result, the other parent must meet specific criteria.
We currently have no structured mating rules for this breed. Please consult your club's regulation.
3. Recommended additional tests
Sensible additions for line planning.
| Test / condition | Scoring scheme | Approved from | Inheritance | Source |
|---|---|---|---|---|
| Keratoconjunctivitis sicca (KCS) - "dry eye" (KCS) | Augen | CLEAR | Complex | CIDD |
| Progressive Retinal Atrophy (PRA) (PRA) | — | CARRIER | Autosomal recessive | CIDD |
| Corneal dystrophy (CD) | Augen | CLEAR | Complex | CIDD |
| Primary Open-Angle Glaucoma (POAG) | Augen | CLEAR | Autosomal recessive | CIDD |
| Cryptorchidism | Physisch | CARRIER | Complex | CIDD |
| Color Dilution Alopecia (CDA) (CDA) | Haut | CARRIER | Complex | CIDD |
| Demodicosis / Demodectic mange | Haut | CARRIER | Complex | CIDD |
| Pattern baldness | Haut | — | Complex | CIDD |
| Mitral valve dysplasia (MVD) | Ultraschall | NORMAL | Complex | CIDD |
| Patent ductus arteriosus (PDA) (PDA) | Ultraschall | NORMAL | Polygenic | CIDD |
| Pulmonary stenosis (PS) | — | NORMAL | Complex | CIDD |
| Chiari-like malformation (CM) and syringomyelia (SM) (CM/SM) | Roentgen | A | Complex | CIDD |
| Hydrocephalus | Roentgen | A | Complex | CIDD |
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 check each upload for authenticity — the profile tile then shows 'verified'