Two female Sumatran Tiger cubs at the San Diego Zoo Safari Park showed off their new pearly whites on Friday Nov. 5th. Born on Oct. 5, the 10- and 9-pound cubs are being acclimated to human interaction in anticipation of vaccines or other necessary veterinary care. It also allows keepers to check if the cubs are teething. Keepers discovered the cubs' canines are now emerging. The cubs are described as clumsy on their feet, which is typical for cubs of this age..