Ok... I will admit this idea is something I got from a game (Age of Empires III to be precise), and it might even border onto ASB...
But I'm itching to know: How plausible would it be for Amazonian Native Americans to be able to domesticate wild cats such as the Jaguar (mainly for warfare purposes)?
And what POD would be required? Could one started on the XVIII century woprk, or is it ASB?