Brazilian porcupines are known for their long, muscular and prehensile tails. Another striking thing about them is, of course, their long quills. Their semi-hollow quills are tricolored with white tips terminating in a barbed end. This makes the 60 to 100 millimeter quills effective at penetrating the flesh of predators and quite difficult to remove. As if that wasn’t enough, another unique characteristic of this porcupine is their specialized foot with its long-clawed digits, which are ideal for moving and foraging among trees.