I've never personally kept more than 6 on any dog I've bred...I've helped my brother's out a few times,had his 1 load of Frenchie pups in with my old digging bitch(having a phantom and producing milk) when his dog had 14 pups the once ,strange because his 2 bitches are sisters,1 throws 8/12 pups the other 4 everytime...even when using same stud dog..the bitch that throws 4 refuses to feed pups,so they been bottle feed both times ...
looking back,don't think I've ever had a bitch that was funny with another bitches pups...found sisters and older siblings in the box cleaning pups when the