Porcupines in Glacier National Park, Montana (© D. Robert & Lorri Franz/Aurora Photos)

【August 23 2014】North American porcupines are born with soft quills, and no one’s happier about that than mom. But within just a few hours after birth, those quills will harden into sharp spikes that offer protection from predators.Explore breathtaking Gallery from the HuluTrip homepage over the past 5 years..