But if we wanted to pick one animal, because we can't lecture forever, and we talked about how it really impacted the new world, I'd go with the horse. Because when Native Americans figured out how to adopt the horse to their culture, when they saw these Spanish people riding the horses, they were like, I want one of those! And quite quickly it became a source of wealth in the Native American world. Not only are the plain tribes going to be able to expand because of the horse, but you're also going to have a lot of mountain Native American tribes that are going to adopt to the horse and stop living in an agricultural lifestyle and start living a more nomadic lifestyle. So the horse is going to have a huge impact on how Native Americans lived, how their culture operated. Now in terms of the other way around, there's just not a lot of animals to talk about. You certainly had the llama, the turkey, the raccoon, the mink that ended up in Europe, and to this day there's feral populations of minks and raccoons because of fur farming and such like that.