Responsible Lowchen breeding begins long before any mating takes place, with thorough evaluation of both the prospective sire and dam to determine their suitability for producing healthy offspring. Physical maturity is a prerequisite, and most experts recommend that a Lowchen female be at least two years old before her first breeding to ensure she has reached full physical and emotional maturity. Males should likewise be fully mature, though they are typically capable of siring litters somewhat earlier than females should be bred. Age alone does not determine readiness, however, and a comprehensive health evaluation is essential.
Pre-breeding health screening should include a thorough veterinary examination, current vaccination status verification, brucellosis testing, and breed-specific health testing. For the Lowchen, recommended health evaluations include patellar luxation screening, ophthalmologic examination by a board-certified veterinary ophthalmologist, and cardiac evaluation. Both the sire and dam should be tested and cleared, as breeding decisions based on the health status of only one parent leave significant gaps in the health profile of the resulting litter.
Temperament evaluation is equally important, as the Lowchen's characteristically confident, affectionate, and playful disposition is a defining breed trait that responsible breeders work to preserve. Dogs with significant behavioral issues including excessive fearfulness, aggression, or severe separation anxiety should generally not be bred, as these traits have heritable components and can compromise the quality of life for both the offspring and their future owners. A breeding candidate should exemplify the breed's best qualities in both structure and character.
Genetic diversity is a particularly important consideration in the Lowchen, which is a relatively rare breed with a smaller gene pool than more popular breeds. Responsible breeders study pedigrees carefully, calculate coefficients of inbreeding, and make pairing decisions that maintain or improve genetic diversity within the breed while still pursuing improvement in health, structure, and temperament. Access to health databases and breed-specific genetic tools helps inform these complex decisions.