Four baby tortoises debut at Philadelphia Zoo, home to their nearly 100-year-old parents

Four baby Galapagos tortoises made their public debut Wednesday at the Philadelphia Zoo.

They are the offspring of the zoo’s oldest residents, a female named Mommy and a male named Abrazzo, a pair of critically endangered Galapagos tortoises who have become first-time parents at the age of roughly 100.

Mommy has been at the zoo since 1932 and is considered one of the most genetically valuable Galapagos tortoises in the Association of Zoos and Aquariums’ species survival plan. The zoo says she is also the oldest first-time mom of the Western Santa Cruz Galapagos species.