Un herbivore est, dans le domaine de la zoologie, un animal (mammifère, insecte, poisson, etc. ) qui se nourrit exclusivement ou presque de plantes vivantes et non de chair, d'excréments, de champignons ou nécromasse. On peut donc dire que ces animaux sont des hétérotrophes ayant pour source principale de leur alimentation des organismes autotrophes. Le plus grand herbivore terrestre est la girafe, le plus lourd est l'éléphant. Dans le passé, et notamment au Jurassique, de très grands dinosaures herbivores ont existé.
Patagonia is a region located at the southern end of South America, shared by Argentina and Chile. The region comprises the southern section of the Andes mountains as well as the deserts, steppes and grasslands east of this southern portion of the Andes. The Colorado River is usually considered its northern boundary in Argentine territory. To the west, it includes the territory of Valdivia through Tierra del Fuego archipelago. Patagonia has two coasts; a western one towards the Pacific Ocean and an eastern one towards the Atlantic Ocean.
The name Patagonia comes from the word patagón The original word would probably be in Magellan's native Portuguese (patagão) or the Spanish of his men (patagón). It has been interpreted later as "big foot", but the etymology refers to a literary character in a Spanish novel of the early 16th century. It was used by Magellan in 1520 to describe the native people that his expedition thought to be giants. It is now believed that the people he called the Patagons were Tehuelches, who tended to be taller than Europeans of the time.
The Argentine portion of Patagonia includes the provinces of Neuquén, Río Negro, Chubut and Santa Cruz, as well as the eastern portion of Tierra del Fuego archipelago and the southernmost department of Buenos Aires province: Patagones. The Argentine politico-economic Patagonic Region includes the Province of La Pampa.