The "man-eaters of Tsavo," the two large stuffed lions on display at the Field Museum, allegedly killed 140 people in Africa before they were shot, stuffed, and sold to the museum in 1924.

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According to Wikipedia:

After 25 years as Patterson's floor rugs, the lions' skins were sold to the Chicago Field Museum in 1924 for a sum of US$5,000 (US $66,389.37 in 2012). The lions' skins arrived at the museum in very poor condition. The lions were then reconstructed and are now on permanent display along with the original skulls.