Boss pet dual blow

Hi,

I ve 2 boss pet, bossheit and an other one, i don t remember the name.

I habe tried everyday during 5 weeks now to get dual blow and i get maybe 10 or more diferent skill but not dual blow, i feed them with fancy pet food, bossheit under mysterious and the other one under fish.

I heard every boss pet can learn dual blow but some people told me only god pet can? Is it true ??

I have already my samu stuff so that s make me a bit nervous to wait more as 5 weeks and watch this brand new stuff in the storage xD.

Thanks for help.
Ranska