If there was an elephant equivalent of Albert Einstein...
Why would they bother to tell us? :^)
I know that most cetaceans are truly smart because they either try
to avoid humans when they could easily crush us (I know, a few went
rogue, but they had good reason, like the ones with harpoons thrown
into their flanks) or they play with us for their own amusement.
One National Geographic Channel program from a while back showed a
humpback whale get underneath a raft with several marine biologists.
The whale proceeded to lift the raft out of the water a few feet then
drop it down several times before swimming off, leaving the small band
of primates clinging to their little boat with nervous expressions (and
in need of clean underwear? ;^)).