The Philadelphia Zoo welcomed four new Western Santa Cruz tortoises, a subspecies of the Galápagos tortoise. What makes these new additions remarkable is that their mother, affectionately named Mommy, is the oldest known first-time mother of her species. The father, also in his 90s, is named Abrazzo.

PHILADELPHIA -- The Philadelphia Zoo is celebrating the mother tortoise and her babies that set a world record. The Western Santa Cruz Galapagos Tortoise made international headlines earlier this month when, at nearly 100 years old, she became the oldest first-time mom of her species.