For more than 10 years, the San Diego Zoo Wildlife Alliance has led an effort to bolster the population of a threatened species, the mountain yellow-legged frog. But as the zoo’s facilities have ...

Birch Aquarium at the Scripps Institution of Oceanography at UC San Diego marked the occasion as its first ever species reintroduction. The frogs were released into the San Bernardino Mountains in a ...

Gramma, a Galapagos tortoise that was the oldest living animal at the San Diego Zoo, has died at an estimated 141 years of ...