When Jews first set foot on new-to-them continents (AKA: North America, South America, and Australia), they would have found many animals that were previously unknown to them. Some of these new animals are kosher, and some are not. I'm trying to think of some new world animals that are kosher. So far I have bison and turkey (although neither was done without controversy). Are there any more?
I posted this elsewhere and Natan Slifkin and Elli Fischer came up with a few more. I'm just combining what I've gotten from several sources (including the comments above) into a single list of animals and birds. Note that all of these have some level of controversy around them and none are universally accepted, but all of these are accepted by someone and CYLOR for an actual psak on what's kosher.
- Bighorn sheep
- Dall sheep
- Musk Ox
- Muscovey Duck