Aha, I think the penny's dropping now thanx to you girls (Anne, Sara & Grace). :)
Dictionary definition of *entail* :-
Inalienable Inheritance - Bestow (thing) as inalienable possession.
So I imagine that 5th generation of *entail* bitches means that the bitches all have a common ancestor which they are like.

I just didn't get the IW connection when the guest was talking about Aussies. :rolleyes:
Nicky