According to AFP, Diego is over 100 years old and has fathered an estimated 800 offspring.
The sex-crazed tortoise is a Chelonoidis hoodensis, a species found only on Espanola in the Galapagos Islands. There were only two males and a dozen females of the species left on the island about 50 years ago. But largely through Diego's efforts at a nearby breeding centre, along with six females in his enclosure, the tortoises have bounced back, numbering in the thousands.
"He's a very sexually active male reproducer," Washington Tapia, a tortoise specialist at Galapagos National Park, told AFP. "He's contributed enormously to repopulating the island."