The tortoise won't immediately die because it will eat grass available around the zoo. Pic for representation/Thinkstock
The tortoise won't immediately die because it will eat grass available around the zoo. Pic for representation/Thinkstock

The escapee is female, weighs 55 kilograms (121 pounds) and has a "gentle" disposition – but with a history of running away. A Japanese zoo said yesterday it was searching for its giant tortoise, which has escaped for the second time in less than two weeks.

The reptile was captured on security cameras as she wandered out of the main entrance of Shibukawa Animal Park in western Japan's Okayama prefecture on Tuesday morning, according to zoo staffer Yoshimi Yamane. The tortoise "won't immediately die because it will eat grass available around the zoo, but we're all very worried", said Yamane.

"She's quiet and gentle," Yamane said, adding that the zoo has received no reports of sightings of the approximately 35-year-old tortoise. Tuesday's escape was the second time in less than a fortnight that the fleet-footed reptile, which is allowed to walk freely inside the park during opening hours, fled the zoo.