* Charon ( The Three Worlds ), a fictional human species from Ian Irvine's arc of novels, The Three Worlds Cycle

Three living species of elephant are recognized: the African bush elephant, the African forest elephant and the Indian or Asian elephant ; although some group the two African species into one and some researchers also postulate the existence of a fourth species in West Africa.

Three species, which feed their young on insects and few if any seed

* Three species of moths:

Three endemic species dominate the tall and lower montane forests of the archipelago, Drimys confertifolia on both main islands, Myrceugenia fernandeziana on Robinson Crusoe, and M. schulzei on Alexander Selkirk.

Three species of maple trees are predominantly used to produce maple syrup: the sugar maple ( Acer saccharum ), the black maple ( A. nigrum ), and the red maple ( A. rubrum ), because of the high sugar content ( roughly two to five percent ) in the sap of these species.

Three butternuts were a further important find at L ' Anse Aux Meadows: another species which grows only as far north as the St. Lawrence.

Three major cultivars of vanilla currently are grown globally, all of which derive from a species originally found in Mesoamerica, including parts of modern-day Mexico.

Three species of steamer duck are almost flightless, however.

Three species of Malagasy Hippopotamus became extinct during the Holocene on Madagascar, one of them within the past 1, 000 years.

Three species of Loricifera have been found in the sediments at the bottom of the L ' Atalante basin in Mediterranean Sea, more than 3, 000 meters down, the first multicellular organisms known to spend their entire lives in an oxygen-free environment.

Three of the five Park woodrat species live in the desert scrub community.

Three species exhibit efficient metabolism during swimming, as compared with a group of non-cave fish, and many cavefish species exhibit slender bodies adapted to swimming in fast-flowing waters.

Three species are used for brewing soy sauce:

Three species, from equatorial Africa, have no green at all in their plumage, the Black Bee-eater, the Blue-headed Bee-eater and the Rosy Bee-eater.

Three of his drawings showed plants with flowers: two resembled the modern bedding dahlia, and one resembled the species Dahlia merki ; all displayed a high degree of doubleness.

* Three species of rhododendron have masses of red or pink flowers ;

* Three species of bilberry are associated with the junipers.

Three species of Leaf-Nosed Bats follow the bloom of columnar cacti in Northwest Mexico and Southwest United States northward in the spring and then the blooming agaves southward in the fall.