User blog comment:Mckrongs/Monster Hunter Frontier Season Forward 4/@comment-1011548-20120705145118/@comment-969093-20120706130757

There are more monsters you can KO by hitting their tail. Like Akantor at anytime and Gogomoa while swinging across the trees. It's usually in mid-flight that hitting the tail allows you to KO monsters. Don't try this out on any regular Wyverns though. It's for some Elders, Gogomoa and Akantor only.