It's time for a new BC here, so I'd be interested in reading any suggestions regarding selecting a pup (they are all cute little blobs with eyes and legs but nothing much to distinguish them apart, 25 days old at my neighbors farm) I'd rather have a female as they seem to be a little more steady. She will be spade. Our last one could have used a little more aggresivness. She will back down too soon when faced with our tough Cheviots. Any tips training books videos etc. you'd like to share would be much appreciated.