 Other notable animals include the giant anteater, several varieties of sloths and armadillos, coati, giant river otter, tapir, peccaries, marsh deer, Pampas deer, and capybara (the world's largest existing rodent).There are around 75 primate species, including the howler monkey, the capuchin monkey, and the squirrel monkey, the marmoset, and the tamarin.Brazil is home to the anaconda, frequently described, controversially, as the largest snake on the planet.