In what could probably be the only instance of child labor outside the human race, I watched weaver ants build a nest in one of the citrus trees in our backyard. What they do is, some weaver ants pull together leaves, while other weaver ants carry larvae in their mandibles--their babies--and squeeze them. A sticky fluid comes out of the larvae and glues the leaves together; living glue guns. Facinating stuff. Nature is weird and wonderful.