I've seen these 2 words a few times and I'm not sure what they mean. I believe they are acronyms and I think the posts had something to do with pedigrees or breeding. Thanks in advance for the knowledge.
And while I'm at it....OUT OF a dam. Out of should never be used when referring to a sire. I don't know why even otherwise intelligent people can't 'get' this. A puppy comes OUT OF a dam--think about that. It can't possibly come "out of" a sire, the correct term is BY a sire. When I see "he's out of so and so" (referring to a sire) I think ignorance.