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

蛋白物。

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御力，因为它们在充满捕食者热带雨林树冠中觅食，寻找蛋白类零食。