See if any dogs are linebred to Mancera's Rebel Rousier 28 PH-0.46/0.46
Reverse linebreeding does a progeny listing to find out which
descendants are linebred to this particular dog
For top producers this can be a huge list of dogs to work with
(well over 100.000). So there is a limit to this check, just to keep the
responce time within the acceptible