 Some species have piercing mouth parts that allow them to suck up plant juices.Millipedes are preyed on by a wide range of animals, including various reptiles, amphibians, birds, mammals, and insects.Mammalian predators such as coatis and meerkats roll captured millipedes on the ground to deplete and rub off their defensive secretions before consuming their prey, and certain poison dart frogs are believed to incorporate the toxic compounds of millipedes into their own defences.