Although some exotic animals can be brought into the US, provided regulations are followed, the giant armadillo is a protected species. At Tucson International Airport, inspectors opened a shipping crate to find the armor-like skin of a giant armadillo, along with some gems and rocks. It was meant as a gift to a gem distributor in Tucson, Ariz., from his South American supplier.

Mel Wiens/AP/File
In some instances, an armadillo does not make the best gift.