User blog comment:Kogath/Monster Hunter: World Discussion/@comment-24734669-20190901142458/@comment-5158920-20190901143819

Unfortunately I expected it. MHW in general reuses as many animations as possible. That's why Tigrex and Narga's original death/flying animations were changed to Barioths because Barioth was coming in. They even stated they will only add a skeleton and animations if they can reuse them across more than one monster.

Lavasioths original fish flop animation got changed to the Flying/Bird Wyvern as well.