Group 9 · Companion dogs
Prague Ratter
The Prague Ratter is a very small Czech dog that, according to tradition, caught rats at the Bohemian court. It is lively, affectionate and very focused on its owner.
Health
These examinations come from the official breeding programme for the breed Prazsky Krysarik (Praagse rattler) by Dierenwelzijn Vlaanderen (Animal Welfare Flanders). They apply to the puppies’ parents.
In short
Both parents must have 3 examinations:
- 2 DNA tests
- 1 kneecap examination
A sample for DNA tests can be taken either with a mouth swab or by a blood sample. To carry out the examinations, the breeder uses a vet or a laboratory. For each examination below, you can see from what age and how often it must be done. Ask the breeder for the results of both parent dogs.
Mandatory examinations (3)
-
Primary lens luxation (PLL)
DNA test once from birth
Official description
- Method
- DNA test
- Gene variant (for the laboratory)
- ADAMTS17: c.1473+1G>A
- Inheritance
- autosomal recessive
-
Patellar luxation
Kneecap examination once at least 1 year
Official description
- Method
- palpation of the kneecap
-
Von Willebrand disease type 1 (VWF1)
DNA test once from birth
Official description
- Method
- DNA test
- Gene variant (for the laboratory)
- VWF: c.7437G>A
- Inheritance
- autosomal recessive
The breeding programme also contains the breeding advice for each examination and general rules on inbreeding, the number of matings per stud dog and the use of frozen semen. You can find these in the official document.
Source: breeding programme Prazsky Krysarik (Praagse rattler), Dierenwelzijn Vlaanderen, last updated on 03/03/2025.
View the official breeding programme (PDF, in Dutch)
A breeding programme reduces the risk of hereditary conditions, but does not offer a 100% health guarantee.
Translation of the Dutch breeding programme by Puppymakelaar. In case of any difference, the official document prevails.
This breed profile is not a breed sheet within the meaning of the Flemish Breeding Decree (Fokkerijbesluit). The legal rules for breeding this breed are set out in the official breeding programme.
Considerations when buying
According to the breeding programme approved by Dierenwelzijn Vlaanderen, these examinations must be carried out on both parent dogs: Primary lens luxation (PLL), Patellar luxation and Von Willebrand disease type 1 (VWF1). A puppy with a Flemish pedigree comes from parent dogs bred according to this breeding programme. Ask for the results of both parent dogs and compare them with the overview above. A Prague Ratter needs short daily walks and play. Its short coat is easy to care for, but gives little protection against the cold.
Questions for the breeder
- Have both parent dogs undergone all the mandatory examinations in the breeding programme, and may I see the results?
- Will the puppy receive a Flemish pedigree from a recognised breed registry association?
- How are the puppies socialised before they go to their new home?
Breed-specific challenges
It is small and finely built, so take care with rough play. Kind, consistent training and early socialisation help it grow in confidence.
More background
General guides that help you understand this breed information and choose well.
