Answer: inbreed

AnswerCrossword Clue
INBREEDCattleman's term.
INBREEDIntermarry
INBREEDReproduce in kind
INBREEDBecome effete, in a way
INBREEDBest-... (dog show category)
INBREEDWay to produce a champion animal, maybe
INBREEDNot go outside the family
INBREEDKeep it in the family?
INBREEDKeep close relations?
inbreedengage in inbreeding
inbreedto breed closely related stock
inbreedto subject to inbreeding