A proven breeding program, Mack-Zwinger presents the OO-litter, whelped 5/17/19 for your consideration.  This litter is a combination of a male that has shown his ability in top-level competition with a strong female that is a proven herself as a working dog and a producer of working temperament and health which is typical of her bloodlines.  This breeding is expected to produce dogs with strong pack/hunt/herding drives, strong work ethic, physical and mental soundness and will likely excel in IPO competition, SAR, and working K9s for the police department.  Males available.

OO litter vom Mack-Zwinger born 5/17/2019 


  • 12th in 2019 USCA Working Dog Championship 96-84-87 267
  • 8th in 2018 USCA GSD National Championship 98-87-97 282
  • 4th in USCA Working Dog Championship 2018 96-92-93 281



​2016 New England Regional IPO2 2nd place
​HD / ED normal ZW79 DM clear
Inca's mother was a Bundessieger competitor 
Both Woody and Inca's line come through many high level competition dogs including strong producing female lines such as Jilnannah vom Talka Marda and Noditha vom Teufelsgrund!