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- n. Any of various rodents of the genus Ctenomys with large heads, small ears, and hairy tails.
Sorry, no etymologies found.
The critically endangered rodent Ctenomys validus (tuco-tuco de Guaymallén) and vulnerable rodent species such as Octomys mimax, Andalgalomys roigi and Salinomys delicatus, the mara (Dolichotis patagonum) and in some parts of the ecoregion the guanaco (Lama guanicoe) can all be found in this ecoregion.
Two mammals that are endemic to this region are the pink fairy armadillo (Chlamyphrous truncatus), and the tuco-tuco, Ctenomys pontifex.
The other opossum is the black and white Didelphys azarae; and it is indeed strange to find this animal on the pampas, although its presence there is not so mysterious as that of the tuco-tuco.
It is called _tuco-tuco_ from its voice, and _oculto_ from its habits; for it is a dweller underground, and requires a loose, sandy soil in which, like the mole, it may _swim_ beneath the surface.
It was a kind of large drone, an inch long, and the Indians call it "tuco-tuco."
In South America, a burrowing rodent, the tuco-tuco, or Ctenomys, is even more subterranean in its habits than the mole; and I was assured by a Spaniard, who had often caught them, that they were frequently blind; one which I kept alive was certainly in this condition, the cause, as appeared on dissection, having been inflammation of the nictitating membrane.
In South America, a burrowing rodent, the tuco-tuco, or
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