It took nearly 100 years for a duo of endangered Philadelphia Zoo tortoises to become parents -- the time to name those hatchlings will be much, much shorter.

Four adorable western Santa Cruz Galápagos tortoise babies are now on display at Philadelphia Zoo after their 100-year-old 'Mommy' reproduced for the first time.

It is hard to tell the girls apart, so zookeepers put a little dot of different color nail polish on each of them.

The Western Santa Cruz Galapagos Tortoises are making international headlines. At nearly 100-years old, the mother, whose ...

Four baby tortoises made their pubic debut at the Philadelphia Zoo in Philadelphia. They weighed between 70-80 grams. The ...

The zoo on Wednesday debuted its four female Western Santa Cruz Galapagos tortoise hatchlings, moving them to their public ...

Imagine seeing a 100-year-old tortoise become a first-time mother, setting a world record in the process. This incredible story is now unfolding at the Philadelphia Zoo, where a Western Santa Cruz ...

After a 97-year-old Galápagos tortoise named Mommy gave birth, David Muir reports on the debut of four critically endangered Western Santa Cruz Galápagos tortoises at the Philadelphia Zoo.

For the first time in over 150 years, the Philadelphia Zoo welcomed a clutch of Western Santa Cruz Galapagos tortoises.

The hatchling's parents are the zoo's two oldest residents, each estimated to be around 100-years-old.

For the first time in over 150 years, the Philadelphia Zoo has new additions to the Western Santa Cruz Galapagos tortoise ...