My patterdale bitch has an excellent nose, I do ALOT of flushing out of cover for the lurcher and this bitch never seems to fail, she has never false marked (as far as I can remember!) she has followed the scent and found quarry in some unbeleivable places, it really is a joy to watch, I would trust this bitch 100% I also have a border/lakey type bitch she has a good nose also but the patterdale is by far the better. Another thing in my patterdales favour she is the type of terrier to actually USE her nose properly, she just mooches along quite slowly until she gets a strong scent, the border/