Green when young, and about the size of an adult human's hand when full-grown, Dryococelus australis is more commonly known as the Lord Howe Island stick insect, or the tree lobster. Courtesy of Rohan Cleave/Melbourne Zoo hide caption

toggle caption Courtesy of Rohan Cleave/Melbourne Zoo

Love Giant Insects? Meet The Tree Lobster, Back From The Brink

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This undated photo from the San Diego Zoo shows Speed, a Galapagos tortoise that has been at the zoo since 1933. The zoo reported Friday that Speed had been euthanized at an estimated age of more than 150 years. AP hide caption

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