jack you asked if they are KC yes mine are , as for work i can only say what ive seen my bitches work and the studs work now my liver pup has started and she is the 3rd gen of my breeding, but i had a couple of boys up and thay had hybrid stuff and they wer'nt intrested quite happy above ground but no go below, also with working beddies and hybrids for over 20 yrs ive seen wastage on both fronts because of size and go or lack of it that why i say its got to be working my preferenceis to use all kc stuff as there is some there if you look, before anybody jumps in i don't do i for the money as