The San Diego Zoo's oldest resident, Galapagos tortoise Grandma who is estimated to be about 130 to 140 years old, celebrates Halloween with a pumpkin breakfast in San Diego, California in this October 28, 2015 handout photo. Galapagos tortoises are the giants of the tortoise world, with males weighing more than 500 pounds and females weighing an average of 250 pounds. The San Diego Zoo currently has 13 tortoises. (Photo by Ken Bohn/Reuters/San Diego Zoo)
