There's one more intriguing secret contained in the remains: proteinaceous material.

蛋白质物质。

It's thought that they may have evolved such an excruciating defense because they forage in rainforest canopies loaded with predators looking for proteinaceous snacks.

人们认为，它们可已经进化出如此强大的防御力，因为它们在充满的热带雨林树冠中觅，寻找蛋白质类零。