The Bristle-spined Porcupine is an arboreal rodent from the Atlantic forests of Eastern Brazil. Its key identifying feature is the unique texture of the spines on its back, which feel more like bristles than traditional spines.

Its unique anatomy has special traits like a bony ring around the eye socket and unusually narrow incisors. This rodent exhibits a mix of cranial features seen in other rodents, creating a distinct profile.

Unfortunately, Bristle-spined Porcupines are vulnerable species. Only 17% of their natural habitat remains intact. Forest fragmentation and habitat quality decline are also contributors.