Generally, tortoises can lay eggs into their 50s or 60s, with rare cases of some individuals reproducing at older ages. Tortoises typically reproduce for a span of 30–50 years, depending on the ...

Mommy bred with Abrazzo, an estimated 96-year-old tortoise, to hatch the first tortoises of this species in the zoo’s history. The female tortoise has laid four clutches of eggs since 2023, but ...

The temperature during incubation determines the hatchlings’ sex — eggs incubated at 82.4 degrees Fahrenheit or lower produce female tortoises, while temperatures above 85.1 degrees produce males. It ...

The egg hatched on April 12, and it’s the first successful hatching for the zoo ’s only mating pair of spider tortoises, a 21-year-old male and 12-year-old female. But not for want of trying.

Mommy laid 16 eggs in November, which resulted in four hatchlings with potentially more to come, the zoo said. Tortoise eggs take between four and eight months to hatch.

The temperature during incubation determines the hatchlings' sex — eggs incubated at 82.4 degrees Fahrenheit or lower produce female tortoises, while temperatures above 85.1 degrees produce males.

Mommy bred with Abrazzo, an estimated 96-year-old tortoise, to hatch the first tortoises of this species in the zoo’s history. The female tortoise has laid four clutches of eggs since 2023, but ...

Mommy bred with Abrazzo, an estimated 96-year-old tortoise, to hatch the first tortoises of this species in the zoo’s history. The female tortoise has laid four clutches of eggs since 2023, but ...

Photo by the Philadelphia Zoo Mommy laid 16 eggs in November, which resulted in four hatchlings with potentially more to come, the zoo said. Tortoise eggs take between four and eight months to hatch.

Photo by the Philadelphia Zoo Mommy laid 16 eggs in November, which resulted in four hatchlings with potentially more to come, the zoo said. Tortoise eggs take between four and eight months to hatch.