Thread:- MHCaboose -/@comment-26421638-20160126110143/@comment-969093-20160126134817

I have been searching on this info myself and found that several well-established Japanese databases state it does have a poison gas attack. I knew this myself already but since you are desperate for proof, let me provide it right here:

http://mh4g.game-cmr.com/data/monsterbook/hiryu-gurabiasyu.html

http://siriusmhf.blog.fc2.com/blog-entry-811.html

http://wikiwiki.jp/nenaiko/?%A5%E2%A5%F3%A5%B9%A5%BF%A1%BC%2F%A5%B0%A5%E9%A5%D3%A5%E2%A5%B9

You're welcome.