Groaning or growling Mantras

[Wun Yuen Gong]

I remember a qikung exercise of Mantak lately on here of Dragon and Tiger chi kung where he uses sound like a tiger growling or groaning. I think it was packing the chi into the Dan Tian, is there any mantras using this outside Mantak the reason i ask is my iron body training uses a groaning sound to boost the energy and chi as well work the abs more.

 

Im looking for information of ancient mantras that use the Tiger as a sound activation, any help would be appreciated!

 

regards

WYG