Prehensile-Tailed Porcupine
Not only does the mother have extreme experiences during birth, but the babies are born in a tree, which lessens their survival rate in general. Sometimes, the porcupines can fall out of the tree during birth. When this happens, the porcupine must cling onto the branch for dear life, otherwise, the fall will be fatal. And sometimes, when they do fall, they can impale themselves with their quills (Dog of the Desert).