Some ants have another secret talent: They're trapeze artists. In certain species, if the foraging group needs to cross a gap to another tree branch, the ants will build a bridge out of their own bodies to allow their coworkers to step across.
This feat has been performed in the lab. The University of Bristol's Nigel Franks set up a piece of wood for Panamanian army ants to traverse, but he drilled holes in it to impede their progress. Individual ants spread their bodies over the holes to bridge the divide. Meanwhile, other ants tested the holes to determine whose body was the right size to act as a filler.