[scentoni]

North and South America were teeming with large mammals before humans came to this hemisphere 10-20kya. Saber-tooth cats, horses, ground sloths, enormous camels, mammoths, mastodons, ....

https://en.wikipedia.org/wiki/List_of_North_American_animals...

https://en.wikipedia.org/wiki/List_of_South_American_animals...