Back in the late 80’s, worked with about 10 people trying to install two ~20 ft. Washingtonia Robusta palm trees into the raised planters inside the Elephant House. We worked all day with various lifting tools & couldn’t lift the heavy rootballs high enough to make it over the lip of the beds. We went back the next day with a 10# bag of onions and employed a mature Asian Elephant to do the job for us. Done in 5 minutes. No sweat. She was SOOO sweet! You could tell she really liked helping.