Of the indigenous mammalia, the only one now left of any size, which is common, is the Cervus campestris.

This deer is exceedingly abundant, often in small herds, throughout the countries bordering the Plata and in Northern Patagonia.

If a person crawling close along the ground, slowly advances towards a herd, the deer frequently, out of curiosity, approach to reconnoitre him.

I have by this means, killed from one spot, three out of the same herd.

Although so tame and inquisitive, yet when approached on horseback, they are exceedingly wary.