Eciton hamatum preys on the brood of other social insects. Here, workers carry captured ant and wasp larvae back to their bivouac. Jatun Sacha reserve, Napo, Ecuador

Eciton burchellii submajor carrying a spider. This long-legged caste is specialized for transporting large or awkward prey. Maquipucuna reserve, Pichincha, Ecuador

Anonychomyrma workers aggressively defend the carcass of a carpenter ant they have found from would-be usurpers. Harrietville, Victoria, Australia