The Roosmalen's Dwarf Porcupine inhabits the southern Amazon rainforest in Brazil. Dutch botanist and ecologist Marc van Roosmalen discovered it in 2001. 

Roosmalen's Dwarf Porcupine is smaller than other porcupine species, weighing only about 2 pounds as an adult. Its shorter quills are less dense and have bands of black and white. Additionally, its prehensile tails help it navigate through dense trees. 

This nocturnal species spends its days in the safety of hollow trees or burrows. It ventures out at night to forage for food. Its diet consists of leaves, fruits, and bark, with a preference for certain palm fruits.

Their reproduction is slow, and they give birth only to a single offspring after a gestation period of about seven months.

The Black-tailed Hairy Dwarf Porcupine lives in the rainforests of Colombia and Venezuela. It has a black tail with dense and short quills, which it uses for defense. It has a prehensile tail and spends its days in the safety of the tree canopy. 

This porcupine also feeds on leaves, fruits, and small branches and gives birth to a single offspring after carrying it for about 202 days.

The Mexican Hairy Dwarf Porcupine is a nocturnal creature found in the rainforests of Mexico. It has a light-colored head that contrasts with its dark body. It is covered in short, yellowish quills hidden by long black fur. 

Sometimes, spines peek through the fur on its back and shoulders. Its hairless head showcases the yellowish quills. It has a pink, wide, round nose and small eyes. Moreover, its spiny prehensile tail is wide at the base and narrow at the end.

These quills function as a security system; the porcupine can puff them up to transform into a spiky ball when threatened. The Mexican Hairy Dwarf Porcupine primarily feeds on fruits, leaves, and bark and occasionally consumes small insects and roots.

The Brown Hairy Dwarf Porcupine lives in the thick forests of Colombia. It prefers to avoid the forest floor. 

This porcupine has soft, long spines and a shorter tail than its relatives. The tail helps the porcupine navigate the tree branches, where it spends most of its time. 

Moreover, it comes out at night to search for food, including the leaves, fruits, and small branches of the Cecropia tree. 

When threatened, the porcupine fluffs up its quills to appear bigger and scarier, accompanied by whistles, grunts, and shrieks.

The Bahia Hairy Dwarf Porcupine measures about 24 inches long, not counting the tail. It also has short, dense spines hidden beneath coarse, brown hair. 

It is a nocturnal animal that feeds on leaves, fruits, and bark; it forages alone for food and shelter but seeks companionship only during the mating season. 

The species wards off potential threats by raising its quills and rattling when threatened. Moreover, it disperses seeds around the forest floor, contributing to the biodiversity of Brazil's lush forests.

The Stump-tailed Porcupine lives in the tropical rainforests of South America. Its short, stubby tail serves as a sensitive touch organ and a balance aid. 

Moreover, it rests in tree hollows or burrows during the day and forages for food at night. It eats leaves, fruits, bark, roots, and insects and communicates with various sounds.

The Andean Porcupine lives in the forests of Colombia, Ecuador, and Peru. It showcases a large pink nose and tiny eyes. Its body is covered in dark spines with yellowish tips distributed evenly around the midsection. 

Moreover, it has a prehensile tail that narrows from a wider base. Unlike the hairy Mexican dwarf porcupine, the Andean porcupines are more spiny.

It feeds on leaves, fruits, bark, insects, and bird eggs, controlling vegetation and supporting the food chain in its ecosystem. However, the porcupine's reproductive habits and population trends are not well-known, which makes them an intriguing subject for scientists.

The Bicolor-spined Porcupine is a nocturnal mammal native to the rainforests of Colombia, Ecuador, Peru, and Venezuela. It has a dense coat of yellow-based, black-tipped spines that darken on its mid-back. Its primarily spine-free tail is fully prehensile, aiding in maneuverability.

It communicates using various sounds and primarily feeds on leaves, fruits, and bark, supplementing its diet with roots, stems, and insects. 

After a gestation period of around 200 days, the female gives birth to a single offspring, which initially has soft quills that harden within a few days.

Long-tailed porcupines, indigenous to regions such as Brunei, Indonesia, and Malaysia, resemble rats. They boast black or brown coloration, contrasting with white underbodies. Short, dark brown spines with white bases blanket their bodies, excluding their heads and underbelly.

Among their defensive mechanisms, they shed their tails when seized by predators, but these tails do not regenerate. Their broad paws enable adept tree climbing, which is useful when foraging for food. 

Primarily herbivores, they consume various plant materials, including leaves, wood, roots, and bark. Occasionally, they also ingest insects and other arthropods. Notably, their role as food hoarders aids in seed dispersal.

The North African Crested Porcupine is one of the largest rodents in the world. Its black or brown body is covered with porcupine quills that can reach up to 14 inches. It prefers rocky terrain, where it spends most of the day in complex burrows. 

While generally peaceful, the Crested Porcupine will fight back when it perceives an immediate threat.