Othello the Aldabra giant tortoise, who was well over 100 years old, died at the St. Louis Zoo on April 8. Screengrab from St ...

Mommy has been living at the Philadelphia Zoo for 90 years, and waited until old age to experience motherhood.

According to the zoo, the tortoise named Mommy is estimated to be around 100 years old. That makes her the oldest first-time mom of her species. So far, there are four hatchlings. The first one ...