The pink fairy armadillo is classified as a fossorial generalist insectivore. This nocturnal insectivore hunts from a perch like a shrike or flycatcher. The Hawaiian hoary bat is a generalist insectivore. The cactus wren is primarily an insectivore. It is a voracious insectivore with little resistance to starvation. There are also several species of insectivore found in Britain. Such use in competition may be a secondary aspect of the insectivore venom. Mainland insectivore populations are generally similar to the rest of Britain. Tooth shape was originally designed for a strictly insectivore diet with piercing teeth.