> why does it have to have so many other muscles, and when are those used? Elephants aren't just controlling the direction of the trunk, but the diameter of th

> why does it have to have so many other muscles, and when are those used? Elephants aren't just controlling the direction of the trunk, but the diameter of the interior tube in several "chambers" up and down, tho. They pump water, they must be. Tapir tools are worth study for much the same reasons. Harder to write a research grant proposal there.