Lions have always been a hugely popular circus attraction. In this image of a "Lion Tamer" - a lithograph by Gibson & Co. - we see lions with all their teeth. In reality, large cats performing with a traveling circus sometimes had their teeth removed.
Click on the image for a better view.
Lithograph - reproduction number LC-USZC4-2994 - by Gibson & Co, 1873, online courtesy Library of Congress.