The Zoo Cougar wiggles like no other.
This fly was one of Kelly's original big trout streamers developed way back in the 90's, back before there was instagram and tenkara (just kidding tenkara has been around for like 10,000 years).
The deer hear head gives this fly awesome side to side action. Lightweight and easy to cast, even on 5 weights. Best fished on a sink fly line.