Guns, germs, and Steel?????

Question

How does Diamond refute the argument that the failure to domesticate certian animals arose from cultural differences? What does the modern failure to domesticate, for example, the eland suggest about the reasons why some peoples independently developed domestic animals and others did not?

Answer 1

The failure of modern efforts to domesticate animals shows that most animals can not be domesticated,. Only one that can is native to South America, the llama, and it does not do well in the tropical rain forest that dominate the continent. In Africa there are none and domesticated animals from other places are brought to the tropical regions they die from disease. There are none that are native to North America or Australia. But in the temperate areas of Europe and Asia there are many, and they can be moved throughout the whole land mass.

I am not sure about were dogs fit into the theory. I remember reading that dogs are descendant from a variety of wild dogs.