A couple of years back I went fly fishing with my father in law and an expensive guide. Before the trip the guide tried to sell us a variety of flies that he assured me were required to catch fish on the Henry's Fork. I declined, used a batch of flies I tied using hair left over after the groomer cut my mom's terrier. I did fairly well on the dog hair fly. By the end of the day the guide was requesting a couple of my "terrier tail nymphs." Scientific studies may say dogs scare fish but those heavily fished trout sure loved the taste of terrier.