I have never worked terriers before but always had a keen interest but have done a lot of ferreting and shooting, I own a 16month old wheaten terrier since he was a pup and a friend just gave me 8month old patterdale pup could I start working them together or how would I know if the were showing any interest in earth's. Is their any rules I should stick to starting off because it going to be pure hit and miss otherwise. Any help would be much appreciated thanks.