Sasuke mastered the CM, Sasuke became aware to Sage Mode thanks Kabuto and the power increase with new jutsu, yet Sasuke never bothered to learn Sage Mode.
Sasuke knows the location names of the Sage animals, he can ask Kabuto or Orochimaru the location of the Sage Snake yet Sasuke doesn't do it.
Sasuke can ask Naruto where Sage frog is, yet doesn't do it.
The 3rd Sage animal we don't know.
CM = Senjutsu energy or Natural energy
I wonder how does one learn Dragon Sage Mode, does a databook mention how one learns and the risks?
What would happen if a ninja has 2 Sage like one has Dragon and Frog Sage mode, would they mix?
Edit
Sage Mode existed way before Indra and Ashura were born if I am not wrong.
Sasuke knows the location names of the Sage animals, he can ask Kabuto or Orochimaru the location of the Sage Snake yet Sasuke doesn't do it.
Sasuke can ask Naruto where Sage frog is, yet doesn't do it.
The 3rd Sage animal we don't know.
CM = Senjutsu energy or Natural energy
I wonder how does one learn Dragon Sage Mode, does a databook mention how one learns and the risks?
What would happen if a ninja has 2 Sage like one has Dragon and Frog Sage mode, would they mix?
Edit
Sage Mode existed way before Indra and Ashura were born if I am not wrong.