Board Thread:Naruto Discussions/@comment-43638386-20190828024709

We know that sage mode is one of the few abilities in Naruto that has nothing to do with the Ōtsutsuki Clan since it was the Toads who taught Hagoromo (although I think it was in the anime so it may not be canon), we also know that snake cave and toad land are the two places KNOWN to teach it. In my personal opinion I think most animal summons must know about sage mode or are you going to tell me that Sage mode is another thing only for the already overpowered Konoha. We only know about Mount Myōboku and Ryūchi Cave because series are centered around konoha but the other summons must also have their own places, Kakashi's dogs, Hanzo's Salamander, the sharks of the great Kisame and many others. 