Four endangered baby tortoises have made their highly anticipated public debut at the Philadelphia Zoo as the first hatchlings of their 100-year-old mother, Mommy.
Mommy, a western Santa Cruz Galápagos tortoise (Chelonoidis niger porteri), made international headlines earlier this month for becoming the oldest first-time mom of her species. Mommy's exact age is unknown, but she is around 100 years old and has been at the zoo for more than 90 of those.
