About Us

Frikkie and Sonia van Kraayenburg have been actively involved in high level animal breeding since 1984. Breeding under the name “Grehenheim”, they first started breeding German Shepherd Dogs and later Bapedi Sheep. Today they are recognized as top German Shepherd Dog breeders all over the world. A more detailed Curriculum Vitae is available on their main website.

Breeding with New Hampshire chickens started in 2009, Potch Koekoeks were added in 2015 and at the beginning of 2016 Rhode Island Reds and Australorps were added to the portfolio.

Together they have written two books on breeding and keeping German Shepherd Dogs and have published more than 30 articles on the subject. Frikkie has always upheld the Genetic side of things and Sonia the keeping and preparation.

Frikkie has a BSc degree with majors Genetics and Zoology and BSc(Hons) and MSc degrees in Mammalogy. The latter degrees combined Genetics as a basis. He has also lectured Genetics at Pretoria University and the Medical University of South Africa (Medunsa).  

This background makes them uniquely qualified to breed top class poultry.

Breeder Cages