Rhinos are keen observers of Nature. We keep an eye out for possibilities; maybe some other critter does things We haven’t done, but might do, now that We consider a new option.
Squirrels are interesting, but they seem so nervous, almost frantic. These are not recommended paths for Rhinos. How could We maintain bulk if We were always scampering hither-thither? And all that chattering?
We do like the idea of living in trees though. Oh, and front teeth.