They are killed by hunters, who claim the tamanduas kill dogs. Its closest living relatives are the giant anteater ("Myrmecophaga tridactyla") and tamanduas (genus "Tamandua"). Krefeld Zoo keeps the stud book for European otters, Goodfellow's kangaroos and tamanduas (small anteaters). Tamanduas manufacture a potent musk in their anal glands which they use for marking territory. Tamanduas are sometimes used by Amazonian Indians to rid their homes of ants and termites. Tamanduas have tapered heads with a long, tubular snout, small eyes, and protruding ears.