Perhaps the dunes have travelled, carrying their
little cattle with them.
Greatest among the carnivores are the two cat-monarchs of South America,
the jaguar and puma. Whatever may be their relative positions elsewhere,
on the pampas the puma is mightiest, being much more abundant and better
able to thrive than its spotted rival. Versatile in its preying habits,
its presence on the pampa is not surprising; but probably only an
extreme abundance of large mammalian prey, which has not existed in
recent times, could have, tempted an animal of the river and
forest-loving habits of the jaguar to colonize this cold, treeless, and
comparatively waterless desert. There are two other important cats. The
grass-cat, not unlike Felis catus in its robust form and dark colour,
but a larger, more powerful animal, inexpressibly savage in disposition.
The second, Felis geoffroyi, is a larger and more beautiful animal,
coloured like a leopard; it is called wood-cat, and, as the name would
seem to indicate, is an intruder from wooded districts north of the
pampas.
There are two canines: one is Azara's beautiful grey fox-like dog,
purely a fox in habits, and common everywhere. The other is far more
interesting and extremely rare; it is called _aguara,_ its nearest ally
being the _aguara-guazu,_ the Canis jubatus or maned wolf of
naturalists, found north of the pampean district. The aguara is smaller
and has no mane; it is like the dingo in size, but slimmer and with a
sharper nose, and lias a much brighter red colour.
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