From each of her four litters Kastra proved she was not only a superior brood bitch, but one of those rare entities - a great male producer. Her sons have successfully infiltrated breeding programmes all over the world.

• Her first litter
  produced Clemens v. Falltor/1988 (by Nicolai v. Klosterkamp) Sch.H. 3, who went to the USA
  and was cleverly intergrated into American programmes to produce many excellent working progeny.
  
• Her second litter
  produced the champion and Sieger Prinz v. Norden Stamm,
  Sch.H. 3, the subject of this article.
  
• Her third litter
  produced the brown champion and multi-Sieger Rembrandt v. Norden Stamm
  /1989 (by Ninjo v. Norden Stamm) Sch.H. 3.
  
• Her fourth litter
  produced the champion and Indonesian Specialty Winner Atilla v.d. Piratenburg
  /1990 (by Graaf Quirinus v. Neerlands Stam).

Of these, only Rembrandt and Prinz stayed in Europe and although the Rembrandt won many major Sieger titles, it was his half-brother, Prinz, who proved the most signifigent in developing European breeding.

Clemens v. Falltor

Rembrandt v. Norden Stamm