Como Zoo’s Galapagos tortoises celebrate 25th birthday Marco and Irwin, two Galapagos tortoises at the Como Zoo, turned 25 years young on Saturday, May 13. The celebration in their honor included banners, party hats for their shells and a delicious cake. The tortoises munched down on a homemade cake with the encouragement of a cheering crowd. The cake was designed especially for their diet. The ingredients list included: papaya, pear, mandarin oranges, apples, strawberries, edible flowers, pineapple, cantaloupe, cucumber, collard greens and even asparagus “candles.” Galapagos Tortoise Fun Facts: Galapagos tortoises are native to the Galapagos Islands. The average Galapagos tortoise lives to be about 150 years old, and weigh 475 lbs. Marco and Irwin are 240 lbs and 280 lbs, respectively. They are the largest species of tortoise currently living. Marco and Irwin have some large shells to fill, as the oldest living Galapagos tortoise lived to be 152 years old. On their native islands, Darwin’s finch and some mockingbird species have developed unique relationships with the tortoises. According to Como Zoo, tortoises will stretch out, leaving their limbs and necks exposed so the birds can pluck ticks and bugs off of them. To help the species or learn more, check out the Galapagos Conservation Trust.