The passage from the Old World to the New World was not only made by humans, but by animals as well. The natives only had a few animal servants. They had the dog, two kinds of South American Camels, the guinea pig, and several kinds of fowls. On Columbus' second voyage, horses. dog. cattle. chicken, sheep, and goats. Explorers brought back turkeys, llamas, alpacas, and guinea pigs to Europe. These animals did not have as much of an impact on the Old World as the animals brought to the New World had.
