After a female tortoise is fertilized, she undergoes several changes. After mating, the female tortoise will carry eggs for weeks to months, depending on the species. As the female tortoise gets ...

April 4 (UPI) --The Philadelphia Zoo announced the hatching of four critically endangered Western Santa Cruz Galapagos tortoises, the first of their species to hatch at the facility in its history.

Oh baby! The Milwaukee County Zoo’s newest resident has just hatched — a critically endangered northern spider tortoise. The egg hatched on April 12, and it’s the first successful hatching for the zoo ...

Artificial incubation has led to the first successful hatching of Aldabra Giant Tortoises in the Seychelles, following groundbreaking research that revealed their low hatching success in the wild was ...

One nearly century-old tortoise has been a fixture of the Philadelphia Zoo since 1932 — and now she’s living up to her name. Mommy, the estimated 97-year-old Western Santa Cruz Galapagos tortoise, ...

That's the case for a pair of critically endangered Western Santa Cruz Galapagos tortoises after four baby tortoises recently hatched at the Philadelphia Zoo. The parents -- aptly-named Mommy and ...