Board Thread:General Discussion/@comment-17735225-20151217163324/@comment-25275196-20151227233358

Breaking Rajang's tail stops it from going golden, but that's pretty common knowledge.

Breaking Barioth's wings make it flinch when doing it's evasive move.

Breaking Blangonga's fangs stop it from summoning blango's.

Cutting most tails will change the hitbox.

Cutting the tail of any of the main 4 elder dragons stops it from using its gimmick (Kushala = wind barrier, Teostra/Lunastra = Flame aura, Chammeleos = Invisibility.)

That's all I can recall for now.